1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; PR1271 3; RUN: opt < %s -passes=instcombine -S | FileCheck %s 4 5%struct..0anon = type { i32, i32 } 6%struct..1anon = type { double } 7 8define i32 @main() { 9; CHECK-LABEL: @main( 10; CHECK-NEXT: entry: 11; CHECK-NEXT: [[U:%.*]] = alloca [[STRUCT__1ANON:%.*]], align 8 12; CHECK-NEXT: store double 0x7FF0000000000000, ptr [[U]], align 8 13; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds nuw i8, ptr [[U]], i64 4 14; CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[TMP5]], align 4 15; CHECK-NEXT: [[TMP0:%.*]] = and i32 [[TMP6]], 2146435072 16; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i32 [[TMP0]], 2146435072 17; CHECK-NEXT: br i1 [[DOTNOT]], label [[COND_FALSE:%.*]], label [[COND_TRUE:%.*]] 18; CHECK: cond_true: 19; CHECK-NEXT: ret i32 0 20; CHECK: cond_false: 21; CHECK-NEXT: ret i32 1 22; 23entry: 24 %u = alloca %struct..1anon, align 8 25 store double 0x7FF0000000000000, ptr %u 26 %tmp5 = getelementptr %struct..0anon, ptr %u, i32 0, i32 1 27 %tmp6 = load i32, ptr %tmp5 28 %tmp7 = shl i32 %tmp6, 1 29 %tmp8 = lshr i32 %tmp7, 21 30 %tmp89 = trunc i32 %tmp8 to i16 31 icmp ne i16 %tmp89, 2047 32 zext i1 %0 to i8 33 icmp ne i8 %1, 0 34 br i1 %2, label %cond_true, label %cond_false 35 36cond_true: 37 ret i32 0 38 39cond_false: 40 ret i32 1 41} 42 43