1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -S < %s | FileCheck %s 3; RUN: opt -S -passes=instcombine < %s | FileCheck %s --check-prefix=INSTCOMBINE 4 5; Two of the llvm.umax calls are intentionally missing the mangling suffix here, 6; to show that it will be added automatically. 7define i32 @test(i8 %x, i8 %y) { 8; CHECK-LABEL: define i32 @test( 9; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) { 10; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1 11; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]]) 12; CHECK-NEXT: [[MAX1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]]) 13; CHECK-NEXT: [[X_EXT:%.*]] = zext i8 [[X]] to i16 14; CHECK-NEXT: [[Y_EXT:%.*]] = zext i8 [[Y]] to i16 15; CHECK-NEXT: [[MAX2:%.*]] = call i16 @llvm.umax.i16(i16 [[X_EXT]], i16 [[Y_EXT]]) 16; CHECK-NEXT: [[X_EXT2:%.*]] = zext i8 [[X]] to i32 17; CHECK-NEXT: [[Y_EXT2:%.*]] = zext i8 [[Y]] to i32 18; CHECK-NEXT: [[MAX3:%.*]] = call i32 @llvm.umax.i32(i32 [[X_EXT2]], i32 [[Y_EXT2]]) 19; CHECK-NEXT: ret i32 [[MAX3]] 20; 21; INSTCOMBINE-LABEL: define i32 @test( 22; INSTCOMBINE-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) { 23; INSTCOMBINE-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1 24; INSTCOMBINE-NEXT: call void @llvm.assume(i1 [[CMP]]) 25; INSTCOMBINE-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]]) 26; INSTCOMBINE-NEXT: [[MAX3:%.*]] = zext i8 [[TMP1]] to i32 27; INSTCOMBINE-NEXT: ret i32 [[MAX3]] 28; 29 %cmp = icmp sgt i8 %x, -1 30 call void @llvm.assume(i1 %cmp) 31 %max1 = call i8 @llvm.umax(i8 %x, i8 %y) 32 %x.ext = zext i8 %x to i16 33 %y.ext = zext i8 %y to i16 34 %max2 = call i16 @llvm.umax(i16 %x.ext, i16 %y.ext) 35 %x.ext2 = zext i8 %x to i32 36 %y.ext2 = zext i8 %y to i32 37 %max3 = call i32 @llvm.umax.i32(i32 %x.ext2, i32 %y.ext2) 38 ret i32 %max3 39} 40