1bcc500b48
Summary: This patch is the first effort to adding basic optimizations for FREEZE in SelDag. Reviewers: spatel, lebedev.ri Reviewed By: spatel Subscribers: xbolva00, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D76707
25 lines
723 B
LLVM
25 lines
723 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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; RUN: llc -stop-after=finalize-isel -mtriple=x86_64-unknown < %s 2>&1 | FileCheck %s
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define i32 @const() {
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; CHECK-LABEL: name: const
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 1
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; CHECK: $eax = COPY [[MOV32ri]]
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; CHECK: RET 0, $eax
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%y = freeze i32 1
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ret i32 %y
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}
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define i32 @fold(i32 %x) {
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; CHECK-LABEL: name: fold
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; CHECK: bb.0 (%ir-block.0):
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; CHECK: liveins: $edi
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; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $edi
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; CHECK: [[COPY1:%[0-9]+]]:gr32 = COPY [[COPY]]
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; CHECK: $eax = COPY [[COPY1]]
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; CHECK: RET 0, $eax
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%y = freeze i32 %x
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%z = freeze i32 %y
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ret i32 %z
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}
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