derek.holloway
7502bf64a4
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98 lines
2.9 KiB
LLVM
98 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs -fixup-byte-word-insts=1 -mtriple=x86_64-- < %s | FileCheck --check-prefix=X64 %s
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; RUN: llc -verify-machineinstrs -fixup-byte-word-insts=0 -mtriple=x86_64-- < %s | FileCheck --check-prefix=X64 %s
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; RUN: llc -verify-machineinstrs -fixup-byte-word-insts=1 -mtriple=i386-- < %s | FileCheck --check-prefixes=X86,X86-BWON %s
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; RUN: llc -verify-machineinstrs -fixup-byte-word-insts=0 -mtriple=i386-- < %s | FileCheck --check-prefixes=X86,X86-BWOFF %s
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target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
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define i8 @test_movb(i8 %a0) nounwind {
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; X64-LABEL: test_movb:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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;
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; X86-BWON-LABEL: test_movb:
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; X86-BWON: # %bb.0:
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; X86-BWON-NEXT: movzbl {{[0-9]+}}(%esp), %eax
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; X86-BWON-NEXT: retl
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;
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; X86-BWOFF-LABEL: test_movb:
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; X86-BWOFF: # %bb.0:
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; X86-BWOFF-NEXT: movb {{[0-9]+}}(%esp), %al
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; X86-BWOFF-NEXT: retl
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ret i8 %a0
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}
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define i8 @test_movb_Os(i8 %a0) nounwind optsize {
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; X64-LABEL: test_movb_Os:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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;
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; X86-LABEL: test_movb_Os:
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; X86: # %bb.0:
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; X86-NEXT: movb {{[0-9]+}}(%esp), %al
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; X86-NEXT: retl
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ret i8 %a0
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}
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define i8 @test_movb_Oz(i8 %a0) nounwind minsize {
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; X64-LABEL: test_movb_Oz:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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;
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; X86-LABEL: test_movb_Oz:
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; X86: # %bb.0:
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; X86-NEXT: movb {{[0-9]+}}(%esp), %al
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; X86-NEXT: retl
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ret i8 %a0
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}
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define i16 @test_movw(i16 %a0) {
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; X64-LABEL: test_movw:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: # kill: def $ax killed $ax killed $eax
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; X64-NEXT: retq
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;
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; X86-BWON-LABEL: test_movw:
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; X86-BWON: # %bb.0:
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; X86-BWON-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X86-BWON-NEXT: retl
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;
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; X86-BWOFF-LABEL: test_movw:
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; X86-BWOFF: # %bb.0:
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; X86-BWOFF-NEXT: movw {{[0-9]+}}(%esp), %ax
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; X86-BWOFF-NEXT: retl
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ret i16 %a0
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}
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; Verify we don't mess with H-reg copies (only generated in 32-bit mode).
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define i8 @test_movb_hreg(i16 %a0) {
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; X64-LABEL: test_movb_hreg:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shrl $8, %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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;
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; X86-LABEL: test_movb_hreg:
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; X86: # %bb.0:
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; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
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; X86-NEXT: addb %al, %ah
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; X86-NEXT: movb %ah, %al
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; X86-NEXT: retl
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%tmp0 = trunc i16 %a0 to i8
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%tmp1 = lshr i16 %a0, 8
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%tmp2 = trunc i16 %tmp1 to i8
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%tmp3 = add i8 %tmp0, %tmp2
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ret i8 %tmp3
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}
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