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