derek.holloway
7502bf64a4
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43 lines
1.3 KiB
LLVM
43 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; PR1271
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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%struct..0anon = type { i32, i32 }
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%struct..1anon = type { double }
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define i32 @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[U:%.*]] = alloca [[STRUCT__1ANON:%.*]], align 8
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; CHECK-NEXT: store double +inf, ptr [[U]], align 8
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[U]], i64 4
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; CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[TMP5]], align 4
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; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[TMP6]], 2146435072
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; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i32 [[TMP0]], 2146435072
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; CHECK-NEXT: br i1 [[DOTNOT]], label [[COND_FALSE:%.*]], label [[COND_TRUE:%.*]]
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; CHECK: cond_true:
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; CHECK-NEXT: ret i32 0
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; CHECK: cond_false:
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; CHECK-NEXT: ret i32 1
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;
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entry:
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%u = alloca %struct..1anon, align 8
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store double 0x7FF0000000000000, ptr %u
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%tmp5 = getelementptr %struct..0anon, ptr %u, i32 0, i32 1
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%tmp6 = load i32, ptr %tmp5
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%tmp7 = shl i32 %tmp6, 1
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%tmp8 = lshr i32 %tmp7, 21
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%tmp89 = trunc i32 %tmp8 to i16
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icmp ne i16 %tmp89, 2047
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zext i1 %0 to i8
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icmp ne i8 %1, 0
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br i1 %2, label %cond_true, label %cond_false
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cond_true:
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ret i32 0
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cond_false:
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ret i32 1
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}
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