ba627a32e1
This patch includes the following updates to the load/store refactoring effort introduced in D93370: - Update various VSX patterns that use to "force" an XForm, to instead just XForm. This allows the ability for the patterns to compute the most optimal addressing mode (and to produce a DForm instruction when possible) - Update pattern and test case for the LXVD2X/STXVD2X intrinsics - Update LIT test cases that use to use the XForm instruction to use the DForm instruction Differential Revision: https://reviews.llvm.org/D95115
29 lines
1.4 KiB
LLVM
29 lines
1.4 KiB
LLVM
; RUN: llc < %s -O0 -fast-isel -mattr=+vsx -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -ppc-late-peephole=false | FileCheck %s --check-prefix=ELF64VSX
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;; The semantics of VSX stores for when R0 is used is different depending on
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;; whether it is used as base or offset. If used as base, the effective
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;; address computation will use zero regardless of the content of R0. If used as
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;; an offset the content will be used in the effective address. We observed that
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;; for some constructors, the initialization values were being stored without
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;; an offset register being specified which was causing R0 to be used as offset
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;; in regions where it contained the value in the link register. This test
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;; verifies that R0 is used as base in these situations.
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%SomeStruct = type { double }
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; ELF64VSX-LABEL: SomeStructCtor
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define linkonce_odr void @SomeStructCtor(%SomeStruct* %this, double %V) unnamed_addr align 2 {
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entry:
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%this.addr = alloca %SomeStruct*, align 8
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%V.addr = alloca double, align 8
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store %SomeStruct* %this, %SomeStruct** %this.addr, align 8
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; ELF64VSX: stfd {{[0-9][0-9]?}}, -{{[1-9][0-9]?}}({{[1-9][0-9]?}})
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store double %V, double* %V.addr, align 8
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%this1 = load %SomeStruct*, %SomeStruct** %this.addr
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%Val = getelementptr inbounds %SomeStruct, %SomeStruct* %this1, i32 0, i32 0
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; ELF64VSX: stxsdx {{[0-9][0-9]?}}, 0, {{[1-9][0-9]?}}
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%0 = load double, double* %V.addr, align 8
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store double %0, double* %Val, align 8
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ret void
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}
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