derek.holloway
7502bf64a4
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80 lines
2.5 KiB
LLVM
80 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv64 -mattr=+m -O2 < %s | FileCheck %s --check-prefix=CHECK-O2
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; RUN: llc -mtriple=riscv64 -mattr=+m -O3 < %s | FileCheck %s --check-prefix=CHECK-O3
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; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-size=2 < %s | FileCheck %s --check-prefix=CHECK-O2
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; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-placement-threshold=2 < %s | FileCheck %s --check-prefix=CHECK-O2
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; RUN: llc -mtriple=riscv64 -mattr=+m -tail-dup-placement-threshold=6 < %s | FileCheck %s --check-prefix=CHECK-O3
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@a = external global i32
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@b = external global i32
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@c = external global i32
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declare i32 @foo(i32)
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define i32 @test(i32 %n) {
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; CHECK-O2-LABEL: test:
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; CHECK-O2: # %bb.0: # %entry
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; CHECK-O2-NEXT: sext.w a1, a0
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; CHECK-O2-NEXT: blez a1, .LBB0_2
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; CHECK-O2-NEXT: # %bb.1: # %if.then
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; CHECK-O2-NEXT: lui a1, %hi(a)
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; CHECK-O2-NEXT: lw a1, %lo(a)(a1)
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; CHECK-O2-NEXT: mul a0, a1, a0
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; CHECK-O2-NEXT: j .LBB0_3
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; CHECK-O2-NEXT: .LBB0_2: # %if.else
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; CHECK-O2-NEXT: lui a1, %hi(b)
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; CHECK-O2-NEXT: lw a1, %lo(b)(a1)
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; CHECK-O2-NEXT: divw a0, a1, a0
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; CHECK-O2-NEXT: .LBB0_3: # %if.end
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; CHECK-O2-NEXT: lui a1, %hi(c)
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; CHECK-O2-NEXT: lw a1, %lo(c)(a1)
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; CHECK-O2-NEXT: addi a0, a0, -1
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; CHECK-O2-NEXT: mulw a0, a0, a1
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; CHECK-O2-NEXT: tail foo
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;
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; CHECK-O3-LABEL: test:
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; CHECK-O3: # %bb.0: # %entry
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; CHECK-O3-NEXT: sext.w a1, a0
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; CHECK-O3-NEXT: blez a1, .LBB0_2
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; CHECK-O3-NEXT: # %bb.1: # %if.then
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; CHECK-O3-NEXT: lui a1, %hi(a)
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; CHECK-O3-NEXT: lw a1, %lo(a)(a1)
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; CHECK-O3-NEXT: mul a0, a1, a0
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; CHECK-O3-NEXT: lui a1, %hi(c)
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; CHECK-O3-NEXT: lw a1, %lo(c)(a1)
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; CHECK-O3-NEXT: addi a0, a0, -1
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; CHECK-O3-NEXT: mulw a0, a0, a1
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; CHECK-O3-NEXT: tail foo
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; CHECK-O3-NEXT: .LBB0_2: # %if.else
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; CHECK-O3-NEXT: lui a1, %hi(b)
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; CHECK-O3-NEXT: lw a1, %lo(b)(a1)
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; CHECK-O3-NEXT: divw a0, a1, a0
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; CHECK-O3-NEXT: lui a1, %hi(c)
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; CHECK-O3-NEXT: lw a1, %lo(c)(a1)
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; CHECK-O3-NEXT: addi a0, a0, -1
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; CHECK-O3-NEXT: mulw a0, a0, a1
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; CHECK-O3-NEXT: tail foo
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entry:
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%cmp = icmp sgt i32 %n, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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%va = load i32, ptr @a
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%mul = mul nsw i32 %va, %n
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br label %if.end
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if.else:
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%vb = load i32, ptr @b
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%div = sdiv i32 %vb, %n
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br label %if.end
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if.end:
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%phi = phi i32 [ %mul, %if.then ], [ %div, %if.else ]
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%vc = load i32, ptr @c
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%add = add nsw i32 %phi, -1
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%arg = mul i32 %add, %vc
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%ret = tail call i32 @foo(i32 %arg)
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ret i32 %ret
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}
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