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af69801c85
This reapplies r216805 with a fix to a copy-past error, which resulted in an incorrect register class. Original commit message: Select the correct register class for the various instructions that are generated when combining instructions and constrain the registers to the appropriate register class. This fixes rdar://problem/18183707. llvm-svn: 217019
21 lines
580 B
LLVM
21 lines
580 B
LLVM
; RUN: llc -mtriple=aarch64-apple-darwin -verify-machineinstrs < %s | FileCheck %s
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; Test that we use the correct register class.
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define i32 @mul_add_imm(i32 %a, i32 %b) {
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; CHECK-LABEL: mul_add_imm
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; CHECK: orr [[REG:w[0-9]+]], wzr, #0x4
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; CHECK-NEXT: madd {{w[0-9]+}}, w0, w1, [[REG]]
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%1 = mul i32 %a, %b
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%2 = add i32 %1, 4
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ret i32 %2
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}
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define i32 @mul_sub_imm1(i32 %a, i32 %b) {
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; CHECK-LABEL: mul_sub_imm1
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; CHECK: orr [[REG:w[0-9]+]], wzr, #0x4
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; CHECK-NEXT: msub {{w[0-9]+}}, w0, w1, [[REG]]
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%1 = mul i32 %a, %b
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%2 = sub i32 4, %1
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ret i32 %2
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}
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