63 lines
1.9 KiB
LLVM
63 lines
1.9 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
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@zeroinit = constant {} zeroinitializer
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@poison = constant {} poison
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@constzeroarray = internal constant [4 x i32] zeroinitializer
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define i32 @crash_on_zeroinit() {
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; CHECK-LABEL: @crash_on_zeroinit(
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; CHECK-NEXT: ret i32 poison
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;
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%load = load i32, ptr @zeroinit
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ret i32 %load
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}
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define i32 @crash_on_poison() {
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; CHECK-LABEL: @crash_on_poison(
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; CHECK-NEXT: ret i32 poison
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;
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%load = load i32, ptr @poison
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ret i32 %load
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}
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@GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49]
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define <8 x i32> @partial_load() {
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; CHECK-LABEL: @partial_load(
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; CHECK-NEXT: ret <8 x i32> <i32 0, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48>
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;
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%load = load <8 x i32>, ptr getelementptr ([8 x i32], ptr @GV, i64 0, i64 -1)
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ret <8 x i32> %load
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}
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@constvec = internal constant <3 x float> <float 0xBFDA20BC40000000, float 0xBFE6A09EE0000000, float 0x3FE279A760000000>
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; This does an out of bounds load from the global constant
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define <3 x float> @load_vec3() {
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; CHECK-LABEL: @load_vec3(
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; CHECK-NEXT: ret <3 x float> poison
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;
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%1 = load <3 x float>, ptr getelementptr inbounds (<3 x float>, ptr @constvec, i64 1)
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ret <3 x float> %1
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}
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define i32 @load_gep_const_zero_array(i64 %idx) {
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; CHECK-LABEL: @load_gep_const_zero_array(
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; CHECK-NEXT: ret i32 0
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;
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%gep = getelementptr inbounds [4 x i32], ptr @constzeroarray, i64 0, i64 %idx
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%load = load i32, ptr %gep
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ret i32 %load
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}
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define i8 @load_i8_multi_gep_const_zero_array(i64 %idx1, i64 %idx2) {
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; CHECK-LABEL: @load_i8_multi_gep_const_zero_array(
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; CHECK-NEXT: ret i8 0
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;
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%gep1 = getelementptr inbounds i8, ptr @constzeroarray, i64 %idx1
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%gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2
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%load = load i8, ptr %gep
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ret i8 %load
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}
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