mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
8b2bc3d574
arrays and structs, which cannot be bitcast to integers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82460 91177308-0d34-0410-b5e6-96231b3b80d8
283 lines
5.8 KiB
LLVM
283 lines
5.8 KiB
LLVM
; RUN: opt < %s -gvn -S | FileCheck %s
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; 32-bit little endian target.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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;; Trivial RLE test.
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define i32 @test0(i32 %V, i32* %P) {
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store i32 %V, i32* %P
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%A = load i32* %P
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ret i32 %A
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; CHECK: @test0
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; CHECK: ret i32 %V
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}
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;;===----------------------------------------------------------------------===;;
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;; Tests for crashers
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;;===----------------------------------------------------------------------===;;
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;; PR5016
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define i8 @crash0({i32, i32} %A, {i32, i32}* %P) {
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store {i32, i32} %A, {i32, i32}* %P
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%X = bitcast {i32, i32}* %P to i8*
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%Y = load i8* %X
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ret i8 %Y
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}
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;;===----------------------------------------------------------------------===;;
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;; Store -> Load and Load -> Load forwarding where src and dst are different
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;; types, but where the base pointer is a must alias.
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;;===----------------------------------------------------------------------===;;
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;; i32 -> f32 forwarding.
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define float @coerce_mustalias1(i32 %V, i32* %P) {
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store i32 %V, i32* %P
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%P2 = bitcast i32* %P to float*
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%A = load float* %P2
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ret float %A
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; CHECK: @coerce_mustalias1
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; CHECK-NOT: load
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; CHECK: ret float
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}
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;; i32* -> float forwarding.
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define float @coerce_mustalias2(i32* %V, i32** %P) {
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store i32* %V, i32** %P
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%P2 = bitcast i32** %P to float*
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%A = load float* %P2
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ret float %A
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; CHECK: @coerce_mustalias2
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; CHECK-NOT: load
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; CHECK: ret float
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}
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;; float -> i32* forwarding.
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define i32* @coerce_mustalias3(float %V, float* %P) {
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store float %V, float* %P
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%P2 = bitcast float* %P to i32**
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%A = load i32** %P2
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ret i32* %A
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; CHECK: @coerce_mustalias3
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; CHECK-NOT: load
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; CHECK: ret i32*
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}
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;; i32 -> f32 load forwarding.
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define float @coerce_mustalias4(i32* %P, i1 %cond) {
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%A = load i32* %P
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%P2 = bitcast i32* %P to float*
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%B = load float* %P2
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br i1 %cond, label %T, label %F
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T:
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ret float %B
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F:
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%X = bitcast i32 %A to float
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ret float %X
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; CHECK: @coerce_mustalias4
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; CHECK: %A = load i32* %P
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; CHECK-NOT: load
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; CHECK: ret float
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; CHECK: F:
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}
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;; i32 -> i8 forwarding
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define i8 @coerce_mustalias5(i32 %V, i32* %P) {
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store i32 %V, i32* %P
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%P2 = bitcast i32* %P to i8*
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%A = load i8* %P2
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ret i8 %A
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; CHECK: @coerce_mustalias5
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; CHECK-NOT: load
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; CHECK: ret i8
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}
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;; i64 -> float forwarding
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define float @coerce_mustalias6(i64 %V, i64* %P) {
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store i64 %V, i64* %P
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%P2 = bitcast i64* %P to float*
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%A = load float* %P2
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ret float %A
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; CHECK: @coerce_mustalias6
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; CHECK-NOT: load
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; CHECK: ret float
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}
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;; i64 -> i8* (32-bit) forwarding
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define i8* @coerce_mustalias7(i64 %V, i64* %P) {
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store i64 %V, i64* %P
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%P2 = bitcast i64* %P to i8**
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%A = load i8** %P2
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ret i8* %A
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; CHECK: @coerce_mustalias7
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; CHECK-NOT: load
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; CHECK: ret i8*
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}
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;; non-local i32/float -> i8 load forwarding.
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define i8 @coerce_mustalias_nonlocal0(i32* %P, i1 %cond) {
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%P2 = bitcast i32* %P to float*
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%P3 = bitcast i32* %P to i8*
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br i1 %cond, label %T, label %F
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T:
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store i32 42, i32* %P
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br label %Cont
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F:
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store float 1.0, float* %P2
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br label %Cont
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Cont:
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%A = load i8* %P3
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ret i8 %A
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; CHECK: @coerce_mustalias_nonlocal0
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; CHECK: Cont:
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; CHECK: %A = phi i8 [
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; CHECK-NOT: load
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; CHECK: ret i8 %A
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}
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;; non-local i32/float -> i8 load forwarding. This also tests that the "P3"
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;; bitcast equivalence can be properly phi translated.
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define i8 @coerce_mustalias_nonlocal1(i32* %P, i1 %cond) {
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%P2 = bitcast i32* %P to float*
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br i1 %cond, label %T, label %F
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T:
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store i32 42, i32* %P
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br label %Cont
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F:
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store float 1.0, float* %P2
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br label %Cont
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Cont:
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%P3 = bitcast i32* %P to i8*
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%A = load i8* %P3
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ret i8 %A
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;; FIXME: This is disabled because this caused a miscompile in the llvm-gcc
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;; bootstrap, see r82411
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;
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; HECK: @coerce_mustalias_nonlocal1
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; HECK: Cont:
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; HECK: %A = phi i8 [
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; HECK-NOT: load
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; HECK: ret i8 %A
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}
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;; non-local i32 -> i8 partial redundancy load forwarding.
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define i8 @coerce_mustalias_pre0(i32* %P, i1 %cond) {
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%P3 = bitcast i32* %P to i8*
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br i1 %cond, label %T, label %F
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T:
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store i32 42, i32* %P
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br label %Cont
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F:
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br label %Cont
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Cont:
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%A = load i8* %P3
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ret i8 %A
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; CHECK: @coerce_mustalias_pre0
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; CHECK: F:
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; CHECK: load i8* %P3
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; CHECK: Cont:
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; CHECK: %A = phi i8 [
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; CHECK-NOT: load
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; CHECK: ret i8 %A
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}
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;;===----------------------------------------------------------------------===;;
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;; Store -> Load and Load -> Load forwarding where src and dst are different
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;; types, and the reload is an offset from the store pointer.
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;;===----------------------------------------------------------------------===;;
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;; i32 -> i8 forwarding.
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;; PR4216
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define i8 @coerce_offset0(i32 %V, i32* %P) {
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store i32 %V, i32* %P
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%P2 = bitcast i32* %P to i8*
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%P3 = getelementptr i8* %P2, i32 2
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%A = load i8* %P3
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ret i8 %A
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; CHECK: @coerce_offset0
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; CHECK-NOT: load
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; CHECK: ret i8
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}
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;; non-local i32/float -> i8 load forwarding.
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define i8 @coerce_offset_nonlocal0(i32* %P, i1 %cond) {
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%P2 = bitcast i32* %P to float*
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%P3 = bitcast i32* %P to i8*
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%P4 = getelementptr i8* %P3, i32 2
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br i1 %cond, label %T, label %F
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T:
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store i32 42, i32* %P
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br label %Cont
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F:
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store float 1.0, float* %P2
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br label %Cont
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Cont:
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%A = load i8* %P4
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ret i8 %A
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; CHECK: @coerce_offset_nonlocal0
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; CHECK: Cont:
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; CHECK: %A = phi i8 [
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; CHECK-NOT: load
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; CHECK: ret i8 %A
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}
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;; non-local i32 -> i8 partial redundancy load forwarding.
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define i8 @coerce_offset_pre0(i32* %P, i1 %cond) {
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%P3 = bitcast i32* %P to i8*
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%P4 = getelementptr i8* %P3, i32 2
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br i1 %cond, label %T, label %F
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T:
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store i32 42, i32* %P
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br label %Cont
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F:
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br label %Cont
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Cont:
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%A = load i8* %P4
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ret i8 %A
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; CHECK: @coerce_offset_pre0
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; CHECK: F:
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; CHECK: load i8* %P4
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; CHECK: Cont:
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; CHECK: %A = phi i8 [
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; CHECK-NOT: load
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; CHECK: ret i8 %A
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}
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