; RUN: opt -S -passes=instsimplify < %s | FileCheck %s ; CHECK-LABEL: definitely_in_bounds ; CHECK: ret i8 0 define i8 @definitely_in_bounds() { ret i8 extractelement ( zeroinitializer, i64 15) } ; CHECK-LABEL: maybe_in_bounds ; CHECK: ret i8 extractelement ( zeroinitializer, i64 16) define i8 @maybe_in_bounds() { ret i8 extractelement ( zeroinitializer, i64 16) } ; Examples of extracting a lane from a splat constant define i32 @extractconstant_shuffle_in_range(i32 %v) { ; CHECK-LABEL: @extractconstant_shuffle_in_range( ; CHECK-NEXT: ret i32 1024 ; %in = insertelement undef, i32 1024, i32 0 %splat = shufflevector %in, undef, zeroinitializer %r = extractelement %splat, i32 1 ret i32 %r } define i32 @extractconstant_shuffle_maybe_out_of_range(i32 %v) { ; CHECK-LABEL: @extractconstant_shuffle_maybe_out_of_range( ; CHECK-NEXT: ret i32 extractelement ( shufflevector ( insertelement ( undef, i32 1024, i32 0), undef, zeroinitializer), i32 4) ; %in = insertelement undef, i32 1024, i32 0 %splat = shufflevector %in, undef, zeroinitializer %r = extractelement %splat, i32 4 ret i32 %r } define i32 @extractconstant_shuffle_invalid_index(i32 %v) { ; CHECK-LABEL: @extractconstant_shuffle_invalid_index( ; CHECK-NEXT: ret i32 extractelement ( shufflevector ( insertelement ( undef, i32 1024, i32 0), undef, zeroinitializer), i32 -1) ; %in = insertelement undef, i32 1024, i32 0 %splat = shufflevector %in, undef, zeroinitializer %r = extractelement %splat, i32 -1 ret i32 %r }