1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=instsimplify -S | FileCheck %s 3 4@zeroinit = constant {} zeroinitializer 5@poison = constant {} poison 6@constzeroarray = internal constant [4 x i32] zeroinitializer 7 8define i32 @crash_on_zeroinit() { 9; CHECK-LABEL: @crash_on_zeroinit( 10; CHECK-NEXT: ret i32 poison 11; 12 %load = load i32, ptr @zeroinit 13 ret i32 %load 14} 15 16define i32 @crash_on_poison() { 17; CHECK-LABEL: @crash_on_poison( 18; CHECK-NEXT: ret i32 poison 19; 20 %load = load i32, ptr @poison 21 ret i32 %load 22} 23 24@GV = private constant [8 x i32] [i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49] 25 26define <8 x i32> @partial_load() { 27; CHECK-LABEL: @partial_load( 28; CHECK-NEXT: ret <8 x i32> <i32 0, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48> 29; 30 %load = load <8 x i32>, ptr getelementptr ([8 x i32], ptr @GV, i64 0, i64 -1) 31 ret <8 x i32> %load 32} 33 34@constvec = internal constant <3 x float> <float 0xBFDA20BC40000000, float 0xBFE6A09EE0000000, float 0x3FE279A760000000> 35 36; This does an out of bounds load from the global constant 37define <3 x float> @load_vec3() { 38; CHECK-LABEL: @load_vec3( 39; CHECK-NEXT: ret <3 x float> poison 40; 41 %1 = load <3 x float>, ptr getelementptr inbounds (<3 x float>, ptr @constvec, i64 1) 42 ret <3 x float> %1 43} 44 45define i32 @load_gep_const_zero_array(i64 %idx) { 46; CHECK-LABEL: @load_gep_const_zero_array( 47; CHECK-NEXT: ret i32 0 48; 49 %gep = getelementptr inbounds [4 x i32], ptr @constzeroarray, i64 0, i64 %idx 50 %load = load i32, ptr %gep 51 ret i32 %load 52} 53 54define i8 @load_i8_multi_gep_const_zero_array(i64 %idx1, i64 %idx2) { 55; CHECK-LABEL: @load_i8_multi_gep_const_zero_array( 56; CHECK-NEXT: ret i8 0 57; 58 %gep1 = getelementptr inbounds i8, ptr @constzeroarray, i64 %idx1 59 %gep = getelementptr inbounds i8, ptr %gep1, i64 %idx2 60 %load = load i8, ptr %gep 61 ret i8 %load 62} 63