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89f8ba2855
This adds proper support for calling intrinsics without mangling suffix when parsing textual IR. This already worked (mostly by accident) when only a single mangling suffix was in use. This patch extends support to the case where the intrinsic is used with multiple signatures, and as such multiple different intrinsic declarations have to be inserted. The final IR will have intrinsics with mangling suffix as usual. Motivated by the discussion at: https://discourse.llvm.org/t/recent-improvements-to-the-ir-parser/77366
40 lines
1.8 KiB
LLVM
40 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S < %s | FileCheck %s
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; RUN: opt -S -passes=instcombine < %s | FileCheck %s --check-prefix=INSTCOMBINE
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; Two of the llvm.umax calls are intentionally missing the mangling suffix here,
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; to show that it will be added automatically.
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define i32 @test(i8 %x, i8 %y) {
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; CHECK-LABEL: define i32 @test(
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; CHECK-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1
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; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]])
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; CHECK-NEXT: [[MAX1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]])
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; CHECK-NEXT: [[X_EXT:%.*]] = zext i8 [[X]] to i16
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; CHECK-NEXT: [[Y_EXT:%.*]] = zext i8 [[Y]] to i16
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; CHECK-NEXT: [[MAX2:%.*]] = call i16 @llvm.umax.i16(i16 [[X_EXT]], i16 [[Y_EXT]])
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; CHECK-NEXT: [[X_EXT2:%.*]] = zext i8 [[X]] to i32
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; CHECK-NEXT: [[Y_EXT2:%.*]] = zext i8 [[Y]] to i32
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; CHECK-NEXT: [[MAX3:%.*]] = call i32 @llvm.umax.i32(i32 [[X_EXT2]], i32 [[Y_EXT2]])
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; CHECK-NEXT: ret i32 [[MAX3]]
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;
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; INSTCOMBINE-LABEL: define i32 @test(
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; INSTCOMBINE-SAME: i8 [[X:%.*]], i8 [[Y:%.*]]) {
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; INSTCOMBINE-NEXT: [[CMP:%.*]] = icmp sgt i8 [[X]], -1
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; INSTCOMBINE-NEXT: call void @llvm.assume(i1 [[CMP]])
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; INSTCOMBINE-NEXT: [[TMP1:%.*]] = call i8 @llvm.umax.i8(i8 [[X]], i8 [[Y]])
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; INSTCOMBINE-NEXT: [[MAX3:%.*]] = zext i8 [[TMP1]] to i32
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; INSTCOMBINE-NEXT: ret i32 [[MAX3]]
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;
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%cmp = icmp sgt i8 %x, -1
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call void @llvm.assume(i1 %cmp)
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%max1 = call i8 @llvm.umax(i8 %x, i8 %y)
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%x.ext = zext i8 %x to i16
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%y.ext = zext i8 %y to i16
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%max2 = call i16 @llvm.umax(i16 %x.ext, i16 %y.ext)
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%x.ext2 = zext i8 %x to i32
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%y.ext2 = zext i8 %y to i32
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%max3 = call i32 @llvm.umax.i32(i32 %x.ext2, i32 %y.ext2)
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ret i32 %max3
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}
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