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https://github.com/c64scene-ar/llvm-6502.git
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4eddf94a14
This commit adds MachineMemOperands to load and store instructions. This allows the peephole optimizer to fold load instructions. Unfortunatelly the peephole optimizer currently doesn't run at -O0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210858 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
376 B
LLVM
13 lines
376 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
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; RUN: llc < %s -fast-isel -fast-isel-abort -mtriple=x86_64-apple-darwin | FileCheck %s
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define i64 @fold_load(i64* %a, i64 %b) {
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; CHECK-LABEL: fold_load
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; CHECK: addq (%rdi), %rsi
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; CHECK-NEXT: movq %rsi, %rax
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%1 = load i64* %a, align 8
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%2 = add i64 %1, %b
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ret i64 %2
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}
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