67 lines
1.6 KiB
LLVM
67 lines
1.6 KiB
LLVM
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; RUN: opt -S -consthoist < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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; Here the masks are all contiguous, and should not be hoisted.
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define i32 @test1() nounwind {
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entry:
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; CHECK-LABEL: @test1
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; CHECK-NOT: bitcast i32 65535 to i32
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; CHECK: and i32 undef, 65535
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%conv121 = and i32 undef, 65535
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br i1 undef, label %if.then152, label %if.end167
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if.then152:
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; CHECK: and i32 undef, 65535
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%conv153 = and i32 undef, 65535
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br i1 undef, label %if.end167, label %end2
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if.end167:
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; CHECK: and i32 {{.*}}, 32768
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%shl161 = shl nuw nsw i32 %conv121, 15
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%0 = load i8, i8* undef, align 1
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%conv169 = zext i8 %0 to i32
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%shl170 = shl nuw nsw i32 %conv169, 7
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%shl161.masked = and i32 %shl161, 32768
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%conv174 = or i32 %shl170, %shl161.masked
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%cmp178 = icmp ugt i32 %conv174, 32767
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br i1 %cmp178, label %end1, label %end2
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end1:
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unreachable
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end2:
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unreachable
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}
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; Here the masks are not contiguous, and should be hoisted.
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define i32 @test2() nounwind {
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entry:
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; CHECK-LABEL: @test2
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; CHECK: bitcast i32 65531 to i32
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%conv121 = and i32 undef, 65531
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br i1 undef, label %if.then152, label %if.end167
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if.then152:
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%conv153 = and i32 undef, 65531
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br i1 undef, label %if.end167, label %end2
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if.end167:
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; CHECK: add i32 {{.*}}, -32758
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%shl161 = shl nuw nsw i32 %conv121, 15
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%0 = load i8, i8* undef, align 1
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%conv169 = zext i8 %0 to i32
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%shl170 = shl nuw nsw i32 %conv169, 7
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%shl161.masked = and i32 %shl161, 32773
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%conv174 = or i32 %shl170, %shl161.masked
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%cmp178 = icmp ugt i32 %conv174, 32767
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br i1 %cmp178, label %end1, label %end2
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end1:
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unreachable
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end2:
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unreachable
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}
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