38 lines
916 B
LLVM
38 lines
916 B
LLVM
; RUN: llc -o - -mtriple=x86_64-linux-gnu %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; We should be able to bypass the load values to their corresponding
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; stores here.
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; CHECK-LABEL: foo
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; CHECK-DAG: movl %esi, -8(%rsp)
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; CHECK-DAG: movl %ecx, -16(%rsp)
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; CHECK-DAG: movl %edi, -4(%rsp)
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; CHECK-DAG: movl %edx, -12(%rsp)
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; CHECK: leal
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; CHECK: addl
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; CHECK: addl
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; CHECK: retq
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define i32 @foo(i32 %a, i32 %b, i32 %c, i32 %d) {
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entry:
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%a0 = alloca i32
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%a1 = alloca i32
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%a2 = alloca i32
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%a3 = alloca i32
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store i32 %b, i32* %a1
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store i32 %d, i32* %a3
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store i32 %a, i32* %a0
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store i32 %c, i32* %a2
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%l0 = load i32, i32* %a0
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%l1 = load i32, i32* %a1
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%l2 = load i32, i32* %a2
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%l3 = load i32, i32* %a3
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%add0 = add nsw i32 %l0, %l1
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%add1 = add nsw i32 %add0, %l2
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%add2 = add nsw i32 %add1, %l3
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ret i32 %add2
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}
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