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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -S < %s | FileCheck %s
; RUN: opt -S -passes=instcombine < %s | FileCheck %s --check-prefix=INSTCOMBINE
; llvm.umax is intentionally missing the mangling suffix here, to show that
; this works fine with auto-upgrade.
define i16 @test(i8 %x, i8 %y) {
; CHECK-LABEL: define i16 @test(
; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1
; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
; CHECK-NEXT: [[MAX1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]])
; CHECK-NEXT: [[X_EXT:%.*]] = zext i8 [[X]] to i16
; CHECK-NEXT: [[Y_EXT:%.*]] = zext i8 [[Y]] to i16
; CHECK-NEXT: [[MAX2:%.*]] = call i16 @llvm.umax.i16(i16 [[X_EXT]], i16 [[Y_EXT]])
; CHECK-NEXT: ret i16 [[MAX2]]
;
; INSTCOMBINE-LABEL: define i16 @test(
; INSTCOMBINE-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
; INSTCOMBINE-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1
; INSTCOMBINE-NEXT: call void @llvm.assume(i1 [[CMP]])
; INSTCOMBINE-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]])
; INSTCOMBINE-NEXT: [[MAX2:%.*]] = zext i8 [[TMP1]] to i16
; INSTCOMBINE-NEXT: ret i16 [[MAX2]]
;
%cmp = icmp sgt i8 %x, -1
call void @llvm.assume(i1 %cmp)
%max1 = call i8 @llvm.umax(i8 %x, i8 %y)
%x.ext = zext i8 %x to i16
%y.ext = zext i8 %y to i16
%max2 = call i16 @llvm.umax.i16(i16 %x.ext, i16 %y.ext)
ret i16 %max2
}
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