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6655b5e078
Summary: A number of optimizations are inhibited by single-use TokenFactors not being merged into the TokenFactor using it. This makes we consider if we can do the merge immediately. Most tests changes here are due to the change in visitation causing minor reorderings and associated reassociation of paired memory operations. CodeGen tests with non-reordering changes: X86/aligned-variadic.ll -- memory-based add folded into stored leaq value. X86/constant-combiners.ll -- Optimizes out overlap between stores. X86/pr40631_deadstore_elision -- folds constant byte store into preceding quad word constant store. Reviewers: RKSimon, craig.topper, spatel, efriedma, courbet Reviewed By: courbet Subscribers: dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, javed.absar, eraman, hiraditya, kbarton, jrtc27, atanasyan, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59260 llvm-svn: 356068
83 lines
2.0 KiB
LLVM
83 lines
2.0 KiB
LLVM
; RUN: llc -mtriple=arm-eabi -pre-RA-sched=source -mattr=+strict-align %s -o - \
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; RUN: | FileCheck %s -check-prefix=EXPANDED
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; RUN: llc -mtriple=armv6-apple-darwin -mcpu=cortex-a8 -mattr=-neon,+strict-align -pre-RA-sched=source %s -o - \
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; RUN: | FileCheck %s -check-prefix=EXPANDED
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; RUN: llc -mtriple=armv6-apple-darwin -mcpu=cortex-a8 %s -o - \
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; RUN: | FileCheck %s -check-prefix=UNALIGNED
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; rdar://7113725
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; rdar://12091029
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define void @t(i8* nocapture %a, i8* nocapture %b) nounwind {
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entry:
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; EXPANDED-LABEL: t:
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; EXPANDED-DAG: ldrb [[R2:r[0-9]+]]
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; EXPANDED-DAG: ldrb [[R3:r[0-9]+]]
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; EXPANDED-DAG: ldrb [[R12:r[0-9]+]]
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; EXPANDED-DAG: ldrb [[R1:r[0-9]+]]
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; EXPANDED-DAG: strb [[R1]]
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; EXPANDED-DAG: strb [[R12]]
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; EXPANDED-DAG: strb [[R3]]
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; EXPANDED-DAG: strb [[R2]]
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; UNALIGNED-LABEL: t:
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; UNALIGNED: ldr r1
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; UNALIGNED: str r1
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%__src1.i = bitcast i8* %b to i32* ; <i32*> [#uses=1]
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%__dest2.i = bitcast i8* %a to i32* ; <i32*> [#uses=1]
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%tmp.i = load i32, i32* %__src1.i, align 1 ; <i32> [#uses=1]
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store i32 %tmp.i, i32* %__dest2.i, align 1
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ret void
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}
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define void @hword(double* %a, double* %b) nounwind {
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entry:
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; EXPANDED-LABEL: hword:
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; EXPANDED-NOT: vld1
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; EXPANDED: ldrh
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; EXPANDED-NOT: str1
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; EXPANDED: strh
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; UNALIGNED-LABEL: hword:
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; UNALIGNED: vld1.16
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; UNALIGNED: vst1.16
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%tmp = load double, double* %a, align 2
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store double %tmp, double* %b, align 2
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ret void
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}
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define void @byte(double* %a, double* %b) nounwind {
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entry:
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; EXPANDED-LABEL: byte:
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; EXPANDED-NOT: vld1
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; EXPANDED: ldrb
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; EXPANDED-NOT: str1
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; EXPANDED: strb
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; UNALIGNED-LABEL: byte:
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; UNALIGNED: vld1.8
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; UNALIGNED: vst1.8
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%tmp = load double, double* %a, align 1
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store double %tmp, double* %b, align 1
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ret void
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}
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define void @byte_word_ops(i32* %a, i32* %b) nounwind {
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entry:
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; EXPANDED-LABEL: byte_word_ops:
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; EXPANDED: ldrb
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; EXPANDED: strb
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; UNALIGNED-LABEL: byte_word_ops:
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; UNALIGNED-NOT: ldrb
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; UNALIGNED: ldr
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; UNALIGNED-NOT: strb
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; UNALIGNED: str
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%tmp = load i32, i32* %a, align 1
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store i32 %tmp, i32* %b, align 1
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ret void
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}
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