derek.holloway
7502bf64a4
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371 lines
14 KiB
LLVM
371 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-sse -verify-machineinstrs < %s | FileCheck %s --check-prefixes=X86,SDAG-X86
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; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-sse2 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=X86,SDAG-X86
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -verify-machineinstrs < %s | FileCheck %s --check-prefixes=X64,SDAG-X64
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; RUN: llc -mtriple=i686-unknown-linux-gnu -global-isel=1 -global-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=X86,GISEL-X86
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -global-isel=1 -global-isel-abort=1 -verify-machineinstrs < %s | FileCheck %s --check-prefixes=X64,GISEL-X64
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declare i32 @llvm.get.rounding()
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define i32 @test_flt_rounds() nounwind {
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; X86-LABEL: test_flt_rounds:
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; X86: # %bb.0:
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; X86-NEXT: subl $2, %esp
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; X86-NEXT: fnstcw (%esp)
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; X86-NEXT: movzwl (%esp), %ecx
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; X86-NEXT: shrl $9, %ecx
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; X86-NEXT: andb $6, %cl
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; X86-NEXT: movl $45, %eax
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; X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; X86-NEXT: shrl %cl, %eax
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; X86-NEXT: andl $3, %eax
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; X86-NEXT: addl $2, %esp
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; X86-NEXT: retl
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;
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; X64-LABEL: test_flt_rounds:
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; X64: # %bb.0:
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; X64-NEXT: fnstcw -{{[0-9]+}}(%rsp)
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; X64-NEXT: movzwl -{{[0-9]+}}(%rsp), %ecx
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; X64-NEXT: shrl $9, %ecx
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; X64-NEXT: andb $6, %cl
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; X64-NEXT: movl $45, %eax
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; X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; X64-NEXT: shrl %cl, %eax
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; X64-NEXT: andl $3, %eax
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; X64-NEXT: retq
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%1 = call i32 @llvm.get.rounding()
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ret i32 %1
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}
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; Make sure we preserve order with fesetround.
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define i32 @multiple_flt_rounds() nounwind {
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; SDAG-X86-LABEL: multiple_flt_rounds:
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; SDAG-X86: # %bb.0: # %entry
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; SDAG-X86-NEXT: pushl %ebx
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; SDAG-X86-NEXT: pushl %esi
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; SDAG-X86-NEXT: subl $20, %esp
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; SDAG-X86-NEXT: movl $1024, (%esp) # imm = 0x400
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; SDAG-X86-NEXT: calll fesetround
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; SDAG-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; SDAG-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; SDAG-X86-NEXT: shrl $9, %ecx
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; SDAG-X86-NEXT: andb $6, %cl
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; SDAG-X86-NEXT: movl $45, %esi
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; SDAG-X86-NEXT: movl $45, %eax
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; SDAG-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X86-NEXT: shrl %cl, %eax
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; SDAG-X86-NEXT: andl $3, %eax
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; SDAG-X86-NEXT: xorl %ebx, %ebx
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; SDAG-X86-NEXT: cmpl $3, %eax
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; SDAG-X86-NEXT: setne %bl
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; SDAG-X86-NEXT: movl $0, (%esp)
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; SDAG-X86-NEXT: calll fesetround
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; SDAG-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; SDAG-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; SDAG-X86-NEXT: shrl $9, %ecx
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; SDAG-X86-NEXT: andb $6, %cl
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; SDAG-X86-NEXT: movl $45, %eax
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; SDAG-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X86-NEXT: shrl %cl, %eax
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; SDAG-X86-NEXT: andl $3, %eax
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; SDAG-X86-NEXT: cmpl $1, %eax
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; SDAG-X86-NEXT: je .LBB1_2
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; SDAG-X86-NEXT: # %bb.1: # %entry
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; SDAG-X86-NEXT: incl %ebx
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; SDAG-X86-NEXT: .LBB1_2: # %entry
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; SDAG-X86-NEXT: movl $3072, (%esp) # imm = 0xC00
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; SDAG-X86-NEXT: calll fesetround
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; SDAG-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; SDAG-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; SDAG-X86-NEXT: shrl $9, %ecx
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; SDAG-X86-NEXT: andb $6, %cl
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; SDAG-X86-NEXT: movl $45, %eax
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; SDAG-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X86-NEXT: shrl %cl, %eax
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; SDAG-X86-NEXT: andl $3, %eax
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; SDAG-X86-NEXT: cmpl $1, %eax
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; SDAG-X86-NEXT: sbbl $-1, %ebx
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; SDAG-X86-NEXT: movl $2048, (%esp) # imm = 0x800
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; SDAG-X86-NEXT: calll fesetround
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; SDAG-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; SDAG-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; SDAG-X86-NEXT: shrl $9, %ecx
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; SDAG-X86-NEXT: andb $6, %cl
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; SDAG-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X86-NEXT: shrl %cl, %esi
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; SDAG-X86-NEXT: andl $3, %esi
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; SDAG-X86-NEXT: xorl %ecx, %ecx
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; SDAG-X86-NEXT: cmpl $2, %esi
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; SDAG-X86-NEXT: setne %cl
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; SDAG-X86-NEXT: negl %ecx
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; SDAG-X86-NEXT: xorl %eax, %eax
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; SDAG-X86-NEXT: cmpl %ecx, %ebx
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; SDAG-X86-NEXT: setne %al
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; SDAG-X86-NEXT: addl $20, %esp
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; SDAG-X86-NEXT: popl %esi
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; SDAG-X86-NEXT: popl %ebx
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; SDAG-X86-NEXT: retl
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;
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; SDAG-X64-LABEL: multiple_flt_rounds:
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; SDAG-X64: # %bb.0: # %entry
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; SDAG-X64-NEXT: pushq %rbp
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; SDAG-X64-NEXT: pushq %r14
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; SDAG-X64-NEXT: pushq %rbx
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; SDAG-X64-NEXT: subq $16, %rsp
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; SDAG-X64-NEXT: movl $1024, %edi # imm = 0x400
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; SDAG-X64-NEXT: callq fesetround
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; SDAG-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
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; SDAG-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
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; SDAG-X64-NEXT: shrl $9, %ecx
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; SDAG-X64-NEXT: andb $6, %cl
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; SDAG-X64-NEXT: movl $45, %ebx
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; SDAG-X64-NEXT: movl $45, %eax
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; SDAG-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X64-NEXT: shrl %cl, %eax
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; SDAG-X64-NEXT: andl $3, %eax
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; SDAG-X64-NEXT: xorl %r14d, %r14d
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; SDAG-X64-NEXT: cmpl $3, %eax
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; SDAG-X64-NEXT: setne %r14b
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; SDAG-X64-NEXT: xorl %edi, %edi
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; SDAG-X64-NEXT: callq fesetround
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; SDAG-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
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; SDAG-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
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; SDAG-X64-NEXT: shrl $9, %ecx
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; SDAG-X64-NEXT: andb $6, %cl
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; SDAG-X64-NEXT: movl $45, %eax
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; SDAG-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X64-NEXT: shrl %cl, %eax
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; SDAG-X64-NEXT: andl $3, %eax
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; SDAG-X64-NEXT: leal 1(%r14), %ebp
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; SDAG-X64-NEXT: cmpl $1, %eax
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; SDAG-X64-NEXT: cmovel %r14d, %ebp
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; SDAG-X64-NEXT: movl $3072, %edi # imm = 0xC00
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; SDAG-X64-NEXT: callq fesetround
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; SDAG-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
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; SDAG-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
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; SDAG-X64-NEXT: shrl $9, %ecx
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; SDAG-X64-NEXT: andb $6, %cl
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; SDAG-X64-NEXT: movl $45, %eax
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; SDAG-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X64-NEXT: shrl %cl, %eax
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; SDAG-X64-NEXT: andl $3, %eax
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; SDAG-X64-NEXT: cmpl $1, %eax
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; SDAG-X64-NEXT: sbbl $-1, %ebp
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; SDAG-X64-NEXT: movl $2048, %edi # imm = 0x800
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; SDAG-X64-NEXT: callq fesetround
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; SDAG-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
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; SDAG-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
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; SDAG-X64-NEXT: shrl $9, %ecx
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; SDAG-X64-NEXT: andb $6, %cl
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; SDAG-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; SDAG-X64-NEXT: shrl %cl, %ebx
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; SDAG-X64-NEXT: andl $3, %ebx
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; SDAG-X64-NEXT: xorl %ecx, %ecx
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; SDAG-X64-NEXT: cmpl $2, %ebx
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; SDAG-X64-NEXT: setne %cl
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; SDAG-X64-NEXT: negl %ecx
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; SDAG-X64-NEXT: xorl %eax, %eax
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; SDAG-X64-NEXT: cmpl %ecx, %ebp
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; SDAG-X64-NEXT: setne %al
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; SDAG-X64-NEXT: addq $16, %rsp
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; SDAG-X64-NEXT: popq %rbx
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; SDAG-X64-NEXT: popq %r14
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; SDAG-X64-NEXT: popq %rbp
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; SDAG-X64-NEXT: retq
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;
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; GISEL-X86-LABEL: multiple_flt_rounds:
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; GISEL-X86: # %bb.0: # %entry
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; GISEL-X86-NEXT: pushl %ebp
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; GISEL-X86-NEXT: pushl %ebx
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; GISEL-X86-NEXT: pushl %edi
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; GISEL-X86-NEXT: pushl %esi
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; GISEL-X86-NEXT: subl $12, %esp
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; GISEL-X86-NEXT: movl $1, %ebp
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; GISEL-X86-NEXT: movl $1024, (%esp) # imm = 0x400
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; GISEL-X86-NEXT: calll fesetround
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; GISEL-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; GISEL-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; GISEL-X86-NEXT: shrl $9, %ecx
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; GISEL-X86-NEXT: andb $6, %cl
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; GISEL-X86-NEXT: movl $45, %edi
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; GISEL-X86-NEXT: movl $45, %eax
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; GISEL-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X86-NEXT: shrl %cl, %eax
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; GISEL-X86-NEXT: andl $3, %eax
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; GISEL-X86-NEXT: xorl %ebx, %ebx
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; GISEL-X86-NEXT: cmpl $3, %eax
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; GISEL-X86-NEXT: setne %bl
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; GISEL-X86-NEXT: andl $1, %ebx
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; GISEL-X86-NEXT: movl $0, (%esp)
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; GISEL-X86-NEXT: calll fesetround
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; GISEL-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; GISEL-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; GISEL-X86-NEXT: shrl $9, %ecx
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; GISEL-X86-NEXT: andb $6, %cl
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; GISEL-X86-NEXT: movl $45, %edx
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; GISEL-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X86-NEXT: shrl %cl, %edx
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; GISEL-X86-NEXT: andl $3, %edx
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; GISEL-X86-NEXT: xorl %eax, %eax
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; GISEL-X86-NEXT: cmpl $1, %edx
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; GISEL-X86-NEXT: sete %cl
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; GISEL-X86-NEXT: testl %ebx, %ebx
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; GISEL-X86-NEXT: je .LBB1_2
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; GISEL-X86-NEXT: # %bb.1: # %entry
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; GISEL-X86-NEXT: movl $2, %ebp
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; GISEL-X86-NEXT: .LBB1_2: # %entry
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; GISEL-X86-NEXT: xorl %esi, %esi
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; GISEL-X86-NEXT: movb %cl, %al
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; GISEL-X86-NEXT: andl $1, %eax
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; GISEL-X86-NEXT: je .LBB1_4
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; GISEL-X86-NEXT: # %bb.3: # %entry
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; GISEL-X86-NEXT: movl %ebx, %ebp
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; GISEL-X86-NEXT: .LBB1_4: # %entry
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; GISEL-X86-NEXT: movl $3072, (%esp) # imm = 0xC00
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; GISEL-X86-NEXT: calll fesetround
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; GISEL-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; GISEL-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; GISEL-X86-NEXT: shrl $9, %ecx
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; GISEL-X86-NEXT: andb $6, %cl
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; GISEL-X86-NEXT: movl $45, %eax
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; GISEL-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X86-NEXT: shrl %cl, %eax
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; GISEL-X86-NEXT: andl $3, %eax
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; GISEL-X86-NEXT: xorl %ebx, %ebx
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; GISEL-X86-NEXT: cmpl %esi, %eax
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; GISEL-X86-NEXT: setne %bl
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; GISEL-X86-NEXT: andl $1, %ebx
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; GISEL-X86-NEXT: addl %ebp, %ebx
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; GISEL-X86-NEXT: movl $2048, (%esp) # imm = 0x800
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; GISEL-X86-NEXT: calll fesetround
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; GISEL-X86-NEXT: fnstcw {{[0-9]+}}(%esp)
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; GISEL-X86-NEXT: movzwl {{[0-9]+}}(%esp), %ecx
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; GISEL-X86-NEXT: shrl $9, %ecx
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; GISEL-X86-NEXT: andb $6, %cl
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; GISEL-X86-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X86-NEXT: shrl %cl, %edi
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; GISEL-X86-NEXT: andl $3, %edi
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; GISEL-X86-NEXT: xorl %ecx, %ecx
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; GISEL-X86-NEXT: movl $2, %eax
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; GISEL-X86-NEXT: cmpl %eax, %edi
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; GISEL-X86-NEXT: setne %cl
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; GISEL-X86-NEXT: shll $31, %ecx
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; GISEL-X86-NEXT: sarl $31, %ecx
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; GISEL-X86-NEXT: xorl %eax, %eax
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; GISEL-X86-NEXT: cmpl %ecx, %ebx
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; GISEL-X86-NEXT: setne %al
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; GISEL-X86-NEXT: andl $1, %eax
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; GISEL-X86-NEXT: addl $12, %esp
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; GISEL-X86-NEXT: popl %esi
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; GISEL-X86-NEXT: popl %edi
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; GISEL-X86-NEXT: popl %ebx
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; GISEL-X86-NEXT: popl %ebp
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; GISEL-X86-NEXT: retl
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;
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; GISEL-X64-LABEL: multiple_flt_rounds:
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; GISEL-X64: # %bb.0: # %entry
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; GISEL-X64-NEXT: pushq %rbp
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; GISEL-X64-NEXT: pushq %r15
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; GISEL-X64-NEXT: pushq %r14
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; GISEL-X64-NEXT: pushq %rbx
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; GISEL-X64-NEXT: pushq %rax
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; GISEL-X64-NEXT: movl $1, %r14d
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; GISEL-X64-NEXT: movl $2, %ebp
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; GISEL-X64-NEXT: movl $1024, %edi # imm = 0x400
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; GISEL-X64-NEXT: callq fesetround
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; GISEL-X64-NEXT: fnstcw (%rsp)
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; GISEL-X64-NEXT: movzwl (%rsp), %ecx
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; GISEL-X64-NEXT: shrl $9, %ecx
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; GISEL-X64-NEXT: andb $6, %cl
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; GISEL-X64-NEXT: movl $45, %ebx
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; GISEL-X64-NEXT: movl $45, %eax
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; GISEL-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X64-NEXT: shrl %cl, %eax
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; GISEL-X64-NEXT: andl $3, %eax
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; GISEL-X64-NEXT: xorl %r15d, %r15d
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; GISEL-X64-NEXT: cmpl $3, %eax
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; GISEL-X64-NEXT: setne %r15b
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; GISEL-X64-NEXT: andl $1, %r15d
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; GISEL-X64-NEXT: xorl %edi, %edi
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; GISEL-X64-NEXT: callq fesetround
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; GISEL-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
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; GISEL-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
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; GISEL-X64-NEXT: shrl $9, %ecx
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; GISEL-X64-NEXT: andb $6, %cl
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; GISEL-X64-NEXT: movl $45, %eax
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; GISEL-X64-NEXT: # kill: def $cl killed $cl killed $ecx
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; GISEL-X64-NEXT: shrl %cl, %eax
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; GISEL-X64-NEXT: andl $3, %eax
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|
; GISEL-X64-NEXT: xorl %ecx, %ecx
|
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; GISEL-X64-NEXT: cmpl $1, %eax
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|
; GISEL-X64-NEXT: sete %cl
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|
; GISEL-X64-NEXT: testl %r15d, %r15d
|
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; GISEL-X64-NEXT: cmovel %r14d, %ebp
|
|
; GISEL-X64-NEXT: andl $1, %ecx
|
|
; GISEL-X64-NEXT: cmovnel %r15d, %ebp
|
|
; GISEL-X64-NEXT: movl $3072, %edi # imm = 0xC00
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|
; GISEL-X64-NEXT: callq fesetround
|
|
; GISEL-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
|
|
; GISEL-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
|
|
; GISEL-X64-NEXT: shrl $9, %ecx
|
|
; GISEL-X64-NEXT: andb $6, %cl
|
|
; GISEL-X64-NEXT: movl $45, %eax
|
|
; GISEL-X64-NEXT: # kill: def $cl killed $cl killed $ecx
|
|
; GISEL-X64-NEXT: shrl %cl, %eax
|
|
; GISEL-X64-NEXT: andl $3, %eax
|
|
; GISEL-X64-NEXT: xorl %r14d, %r14d
|
|
; GISEL-X64-NEXT: cmpl $0, %eax
|
|
; GISEL-X64-NEXT: setne %r14b
|
|
; GISEL-X64-NEXT: andl $1, %r14d
|
|
; GISEL-X64-NEXT: addl %ebp, %r14d
|
|
; GISEL-X64-NEXT: movl $2048, %edi # imm = 0x800
|
|
; GISEL-X64-NEXT: callq fesetround
|
|
; GISEL-X64-NEXT: fnstcw {{[0-9]+}}(%rsp)
|
|
; GISEL-X64-NEXT: movzwl {{[0-9]+}}(%rsp), %ecx
|
|
; GISEL-X64-NEXT: shrl $9, %ecx
|
|
; GISEL-X64-NEXT: andb $6, %cl
|
|
; GISEL-X64-NEXT: # kill: def $cl killed $cl killed $ecx
|
|
; GISEL-X64-NEXT: shrl %cl, %ebx
|
|
; GISEL-X64-NEXT: andl $3, %ebx
|
|
; GISEL-X64-NEXT: xorl %ecx, %ecx
|
|
; GISEL-X64-NEXT: cmpl $2, %ebx
|
|
; GISEL-X64-NEXT: setne %cl
|
|
; GISEL-X64-NEXT: shll $31, %ecx
|
|
; GISEL-X64-NEXT: sarl $31, %ecx
|
|
; GISEL-X64-NEXT: xorl %eax, %eax
|
|
; GISEL-X64-NEXT: cmpl %ecx, %r14d
|
|
; GISEL-X64-NEXT: setne %al
|
|
; GISEL-X64-NEXT: andl $1, %eax
|
|
; GISEL-X64-NEXT: addq $8, %rsp
|
|
; GISEL-X64-NEXT: popq %rbx
|
|
; GISEL-X64-NEXT: popq %r14
|
|
; GISEL-X64-NEXT: popq %r15
|
|
; GISEL-X64-NEXT: popq %rbp
|
|
; GISEL-X64-NEXT: retq
|
|
entry:
|
|
%call = tail call i32 @fesetround(i32 1024)
|
|
%0 = tail call i32 @llvm.get.rounding()
|
|
%cmp = icmp ne i32 %0, 3
|
|
%spec.select = zext i1 %cmp to i32
|
|
%call1 = tail call i32 @fesetround(i32 0)
|
|
%1 = tail call i32 @llvm.get.rounding()
|
|
%cmp2 = icmp eq i32 %1, 1
|
|
%inc4 = select i1 %cmp, i32 2, i32 1
|
|
%errs.1 = select i1 %cmp2, i32 %spec.select, i32 %inc4
|
|
%call6 = tail call i32 @fesetround(i32 3072)
|
|
%2 = tail call i32 @llvm.get.rounding()
|
|
%cmp7 = icmp ne i32 %2, 0
|
|
%inc9 = zext i1 %cmp7 to i32
|
|
%spec.select22 = add nuw nsw i32 %errs.1, %inc9
|
|
%call11 = tail call i32 @fesetround(i32 2048)
|
|
%3 = tail call i32 @llvm.get.rounding()
|
|
%cmp12 = icmp ne i32 %3, 2
|
|
%inc14.neg = sext i1 %cmp12 to i32
|
|
%cmp16 = icmp ne i32 %spec.select22, %inc14.neg
|
|
%cond = zext i1 %cmp16 to i32
|
|
ret i32 %cond
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
declare dso_local i32 @fesetround(i32) local_unnamed_addr #1
|