xref: /llvm-project/llvm/test/Transforms/Scalarizer/order-bug.ll (revision d0a125a1e6860ae8c621171cff3b5b6fb92a4aa2)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt %s -passes='function(scalarizer)' -S -o - | FileCheck %s
3
4; This input caused the scalarizer to replace & erase gathered results when
5; future gathered results depended on them being alive
6
7define dllexport spir_func <4 x i32> @main(float %a) {
8; CHECK-LABEL: @main(
9; CHECK-NEXT:  entry:
10; CHECK-NEXT:    br label [[Z:%.*]]
11; CHECK:       y:
12; CHECK-NEXT:    [[F_UPTO0:%.*]] = insertelement <4 x i32> poison, i32 [[B_I0:%.*]], i64 0
13; CHECK-NEXT:    [[F_UPTO1:%.*]] = insertelement <4 x i32> [[F_UPTO0]], i32 [[B_I0]], i64 1
14; CHECK-NEXT:    [[F_UPTO2:%.*]] = insertelement <4 x i32> [[F_UPTO1]], i32 [[B_I0]], i64 2
15; CHECK-NEXT:    [[F:%.*]] = insertelement <4 x i32> [[F_UPTO2]], i32 [[B_I0]], i64 3
16; CHECK-NEXT:    ret <4 x i32> [[F]]
17; CHECK:       z:
18; CHECK-NEXT:    [[B_I0]] = bitcast float [[A:%.*]] to i32
19; CHECK-NEXT:    br label [[Y:%.*]]
20;
21entry:
22  %i = insertelement <4 x float> undef, float %a, i32 0
23  br label %z
24
25y:
26  %f = shufflevector <4 x i32> %b, <4 x i32> undef, <4 x i32> zeroinitializer
27  ret <4 x i32> %f
28
29z:
30  %b = bitcast <4 x float> %i to <4 x i32>
31  br label %y
32}
33