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llvm-project/llvm/test/CodeGen/X86/insertps-from-constantpool.ll

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[MachineInstrBuilder] Support for adding a ConstantPoolIndex MO with an additional offset. MachineInstrBuilder::addDisp can already add an immediate or global address MO with an adjusted offset, this patch adds support for constant pool indices as well. All remaining MO types still assert - there are a number of other types that could support adjusted offsets but I have no test cases at this time. Required to fix a regression in D13988 found by Mikael Holmén during stress testing (test case attached). Differential Revision: http://reviews.llvm.org/D14867 llvm-svn: 253795
2015-11-22 05:42:26 +08:00
; RUN: llc -mtriple=i686-unknown-unknown -mattr=+sse4.1 < %s | FileCheck %s --check-prefix=X32
; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 < %s | FileCheck %s --check-prefix=X64
; Test for case where insertps folds the load of an insertion element from a constant pool.
define <4 x float> @fold_from_constantpool(<4 x float> %a) {
; X32-LABEL: fold_from_constantpool:
; X32: # BB#0:
; X32-NEXT: insertps {{.*#+}} xmm0 = mem[0],xmm0[1,2,3]
; X32-NEXT: retl
;
; X64-LABEL: fold_from_constantpool:
; X64: # BB#0:
; X64-NEXT: insertps {{.*#+}} xmm0 = mem[0],xmm0[1,2,3]
; X64-NEXT: retq
%1 = call <4 x float> @llvm.x86.sse41.insertps(<4 x float> %a, <4 x float> <float 0.0, float 1.0, float 0.0, float 0.0>, i8 64)
ret <4 x float> %1
}
declare <4 x float> @llvm.x86.sse41.insertps(<4 x float>, <4 x float>, i8) nounwind readnone