derek.holloway
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95 lines
3.2 KiB
LLVM
95 lines
3.2 KiB
LLVM
; RUN: llc -mtriple=thumbv6m-eabi -verify-machineinstrs %s -o - | \
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; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECKV6
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; RUN: llc -mtriple=thumbv6m-eabi -O=0 -verify-machineinstrs %s -o - | \
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; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECKV6
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; RUN: llc -mtriple=thumbv7a-eabi -mattr=-neon -verify-machineinstrs %s -o - | \
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; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECKV7
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; RUN: llc -mtriple=armv7a-eabi -mattr=-neon -verify-machineinstrs %s -o - | \
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; RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECKV7
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@d = external global [64 x i32]
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@s = external global [64 x i32]
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; Function Attrs: nounwind
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define void @t1() #0 {
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entry:
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; CHECK-LABEL: t1:
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; CHECKV6: ldr [[LB:r[0-7]]],
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; CHECKV6-NEXT: ldr [[SB:r[0-7]]],
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; We use '[rl0-9]+' to allow 'r0'..'r12', 'lr'
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; CHECKV7: movt [[LB:[rl0-9]+]], :upper16:d
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; CHECKV7-NEXT: movt [[SB:[rl0-9]+]], :upper16:s
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; CHECK-NEXT: ldm{{(\.w)?}} [[LB]]!,
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; CHECK-NEXT: stm{{(\.w)?}} [[SB]]!,
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; Think of the monstrosity '[[[LB]]]' as '[ [[LB]] ]' without the spaces.
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; CHECK-NEXT: ldrb{{(\.w)?}} {{.*}}, [[[LB]]]
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; CHECK-NEXT: strb{{(\.w)?}} {{.*}}, [[[SB]]]
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tail call void @llvm.memcpy.p0.p0.i32(ptr align 4 @s, ptr align 4 @d, i32 17, i1 false)
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ret void
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}
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; Function Attrs: nounwind
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define void @t2() #0 {
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entry:
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; CHECK-LABEL: t2:
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; CHECKV6: ldr [[LB:r[0-7]]],
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; CHECKV6-NEXT: ldr [[SB:r[0-7]]],
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; CHECKV6-NEXT: ldm{{(\.w)?}} [[LB]]!,
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; CHECKV6-NEXT: stm{{(\.w)?}} [[SB]]!,
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; CHECKV6-DAG: ldrh{{(\.w)?}} {{.*}}, [[[LB]]]
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; CHECKV6-DAG: ldrb{{(\.w)?}} {{.*}}, [[[LB]], #2]
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; CHECKV6-DAG: strb{{(\.w)?}} {{.*}}, [[[SB]], #2]
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; CHECKV6-DAG: strh{{(\.w)?}} {{.*}}, [[[SB]]]
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; CHECKV7: movt [[LB:[rl0-9]+]], :upper16:d
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; CHECKV7-NEXT: movt [[SB:[rl0-9]+]], :upper16:s
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; CHECKV7: ldr{{(\.w)?}} {{.*}}, [[[LB]], #11]
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; CHECKV7-NEXT: str{{(\.w)?}} {{.*}}, [[[SB]], #11]
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tail call void @llvm.memcpy.p0.p0.i32(ptr align 4 @s, ptr align 4 @d, i32 15, i1 false)
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ret void
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}
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; PR23768
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%struct.T = type { i8, i64, i8 }
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@copy = external global %struct.T, align 8
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@etest = external global %struct.T, align 8
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define void @t3() {
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call void @llvm.memcpy.p0.p0.i32(
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ptr align 8 @copy,
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ptr align 8 @etest,
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i32 24, i1 false)
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call void @llvm.memcpy.p0.p0.i32(
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ptr align 8 @copy,
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ptr align 8 @etest,
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i32 24, i1 false)
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ret void
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}
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%struct.S = type { [12 x i32] }
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; CHECK-LABEL: test3
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define void @test3(ptr %d, ptr %s) #0 {
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tail call void @llvm.memcpy.p0.p0.i32(ptr align 4 %d, ptr align 4 %s, i32 48, i1 false)
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; 3 ldm/stm pairs in v6; 2 in v7
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; CHECK: ldm{{(\.w)?}} {{[rl0-9]+!?}}, [[REGLIST1:{.*}]]
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; CHECK: stm{{(\.w)?}} {{[rl0-9]+!?}}, [[REGLIST1]]
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; CHECK: ldm{{(\.w)?}} {{[rl0-9]+!?}}, [[REGLIST2:{.*}]]
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; CHECK: stm{{(\.w)?}} {{[rl0-9]+!?}}, [[REGLIST2]]
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; CHECKV6: ldm {{r[0-7]!?}}, [[REGLIST3:{.*}]]
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; CHECKV6: stm {{r[0-7]!?}}, [[REGLIST3]]
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; CHECKV7-NOT: ldm
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; CHECKV7-NOT: stm
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%arrayidx = getelementptr inbounds %struct.S, ptr %s, i32 0, i32 0, i32 1
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tail call void @g(ptr %arrayidx) #3
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ret void
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}
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declare void @g(ptr)
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; Set "frame-pointer"="all" to increase register pressure
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attributes #0 = { "frame-pointer"="all" }
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; Function Attrs: nounwind
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declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture readonly, i32, i1) #1
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