load.ll
1.31 KB
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; NOTE: Assertions have been autogenerated by update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
@zeroinit = constant {} zeroinitializer
@undef = constant {} undef
define i32 @crash_on_zeroinit() {
; CHECK-LABEL: @crash_on_zeroinit(
; CHECK: ret i32 0
;
%load = load i32, i32* bitcast ({}* @zeroinit to i32*)
ret i32 %load
}
define i32 @crash_on_undef() {
; CHECK-LABEL: @crash_on_undef(
; CHECK: ret i32 undef
;
%load = load i32, i32* bitcast ({}* @undef to i32*)
ret i32 %load
}
@GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49]
define <8 x i32> @partial_load() {
; CHECK-LABEL: @partial_load(
; CHECK: ret <8 x i32> <i32 0, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48>
%load = load <8 x i32>, <8 x i32>* bitcast (i32* getelementptr ([8 x i32], [8 x i32]* @GV, i64 0, i64 -1) to <8 x i32>*)
ret <8 x i32> %load
}
@constvec = internal constant <3 x float> <float 0xBFDA20BC40000000, float 0xBFE6A09EE0000000, float 0x3FE279A760000000>
; This does an out of bounds load from the global constant
define <3 x float> @load_vec3() {
; CHECK-LABEL: @load_vec3(
; CHECK-NEXT: ret <3 x float> undef
%1 = load <3 x float>, <3 x float>* getelementptr inbounds (<3 x float>, <3 x float>* @constvec, i64 1)
ret <3 x float> %1
}