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892143ff70
When an strd instruction doesn't get the registers it wants, it can be expanded into two str instructions. Make sure the first str doesn't kill the base register in the case where the base and data registers are identical: t2STRi12 %R0<kill>, %R0, 4, pred:14, pred:%noreg t2STRi12 %R2<kill>, %R0, 8, pred:14, pred:%noreg <rdar://problem/11101911> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153611 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
4.2 KiB
LLVM
79 lines
4.2 KiB
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -verify-machineinstrs
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32"
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target triple = "thumbv7-apple-darwin10"
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; This function would crash LiveIntervalAnalysis by creating a chain of 4 INSERT_SUBREGs of the same register.
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define arm_apcscc void @NEON_vst4q_u32(i32* nocapture %sp0, i32* nocapture %sp1, i32* nocapture %sp2, i32* nocapture %sp3, i32* %dp) nounwind {
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entry:
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%0 = bitcast i32* %sp0 to <4 x i32>* ; <<4 x i32>*> [#uses=1]
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%1 = load <4 x i32>* %0, align 16 ; <<4 x i32>> [#uses=1]
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%2 = bitcast i32* %sp1 to <4 x i32>* ; <<4 x i32>*> [#uses=1]
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%3 = load <4 x i32>* %2, align 16 ; <<4 x i32>> [#uses=1]
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%4 = bitcast i32* %sp2 to <4 x i32>* ; <<4 x i32>*> [#uses=1]
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%5 = load <4 x i32>* %4, align 16 ; <<4 x i32>> [#uses=1]
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%6 = bitcast i32* %sp3 to <4 x i32>* ; <<4 x i32>*> [#uses=1]
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%7 = load <4 x i32>* %6, align 16 ; <<4 x i32>> [#uses=1]
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%8 = bitcast i32* %dp to i8* ; <i8*> [#uses=1]
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tail call void @llvm.arm.neon.vst4.v4i32(i8* %8, <4 x i32> %1, <4 x i32> %3, <4 x i32> %5, <4 x i32> %7, i32 1)
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ret void
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}
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declare void @llvm.arm.neon.vst4.v4i32(i8*, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, i32) nounwind
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@sbuf = common global [16 x i32] zeroinitializer, align 16 ; <[16 x i32]*> [#uses=5]
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@dbuf = common global [16 x i32] zeroinitializer ; <[16 x i32]*> [#uses=2]
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; This function creates 4 chained INSERT_SUBREGS and then invokes the register scavenger.
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; The first INSERT_SUBREG needs an <undef> use operand for that to work.
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define arm_apcscc i32 @main() nounwind {
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bb.nph:
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br label %bb
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bb: ; preds = %bb, %bb.nph
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%0 = phi i32 [ 0, %bb.nph ], [ %1, %bb ] ; <i32> [#uses=4]
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%scevgep = getelementptr [16 x i32]* @sbuf, i32 0, i32 %0 ; <i32*> [#uses=1]
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%scevgep5 = getelementptr [16 x i32]* @dbuf, i32 0, i32 %0 ; <i32*> [#uses=1]
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store i32 %0, i32* %scevgep, align 4
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store i32 -1, i32* %scevgep5, align 4
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%1 = add nsw i32 %0, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %1, 16 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb2, label %bb
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bb2: ; preds = %bb
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%2 = load <4 x i32>* bitcast ([16 x i32]* @sbuf to <4 x i32>*), align 16 ; <<4 x i32>> [#uses=1]
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%3 = load <4 x i32>* bitcast (i32* getelementptr inbounds ([16 x i32]* @sbuf, i32 0, i32 4) to <4 x i32>*), align 16 ; <<4 x i32>> [#uses=1]
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%4 = load <4 x i32>* bitcast (i32* getelementptr inbounds ([16 x i32]* @sbuf, i32 0, i32 8) to <4 x i32>*), align 16 ; <<4 x i32>> [#uses=1]
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%5 = load <4 x i32>* bitcast (i32* getelementptr inbounds ([16 x i32]* @sbuf, i32 0, i32 12) to <4 x i32>*), align 16 ; <<4 x i32>> [#uses=1]
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tail call void @llvm.arm.neon.vst4.v4i32(i8* bitcast ([16 x i32]* @dbuf to i8*), <4 x i32> %2, <4 x i32> %3, <4 x i32> %4, <4 x i32> %5, i32 1) nounwind
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ret i32 0
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}
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; PR12389
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; Make sure the DPair register class can spill.
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define void @pr12389(i8* %p) nounwind ssp {
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entry:
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%vld1 = tail call <4 x float> @llvm.arm.neon.vld1.v4f32(i8* %p, i32 1)
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tail call void asm sideeffect "", "~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15}"() nounwind
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tail call void @llvm.arm.neon.vst1.v4f32(i8* %p, <4 x float> %vld1, i32 1)
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ret void
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}
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declare <4 x float> @llvm.arm.neon.vld1.v4f32(i8*, i32) nounwind readonly
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declare void @llvm.arm.neon.vst1.v4f32(i8*, <4 x float>, i32) nounwind
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; <rdar://problem/11101911>
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; When an strd is expanded into two str instructions, make sure the first str
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; doesn't kill the base register. This can happen if the base register is the
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; same as the data register.
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%class = type { i8*, %class*, i32 }
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define void @f11101911(%class* %this, i32 %num) ssp align 2 {
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entry:
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%p1 = getelementptr inbounds %class* %this, i32 0, i32 1
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%p2 = getelementptr inbounds %class* %this, i32 0, i32 2
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tail call void asm sideeffect "", "~{r1},~{r3},~{r5},~{r11},~{r13}"() nounwind
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store %class* %this, %class** %p1, align 4
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store i32 %num, i32* %p2, align 4
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ret void
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}
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