mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-01 19:29:22 +00:00
9e81c3bdb2
Remove the command line argument "struct-path-tbaa" since we should not depend on command line argument to decide which format the IR file is using. Instead, we check the first operand of the tbaa tag node, if it is a MDNode, we treat it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA format. When clang starts to use struct-path aware TBAA format no matter whether struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support for scalar TBAA format can be dropped. Existing testing cases are updated to use the struct-path aware TBAA format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
190 lines
5.0 KiB
LLVM
190 lines
5.0 KiB
LLVM
; RUN: opt < %s -basicaa -tbaa -licm -S | FileCheck %s
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target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
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@X = global i32 7 ; <i32*> [#uses=4]
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define void @test1(i32 %i) {
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Entry:
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br label %Loop
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; CHECK-LABEL: @test1(
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; CHECK: Entry:
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; CHECK-NEXT: load i32* @X
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; CHECK-NEXT: br label %Loop
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Loop: ; preds = %Loop, %0
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%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] ; <i32> [#uses=1]
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%x = load i32* @X ; <i32> [#uses=1]
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%x2 = add i32 %x, 1 ; <i32> [#uses=1]
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store i32 %x2, i32* @X
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%Next = add i32 %j, 1 ; <i32> [#uses=2]
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%cond = icmp eq i32 %Next, 0 ; <i1> [#uses=1]
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br i1 %cond, label %Out, label %Loop
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Out:
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ret void
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; CHECK: Out:
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; CHECK-NEXT: store i32 %x2, i32* @X
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; CHECK-NEXT: ret void
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}
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define void @test2(i32 %i) {
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Entry:
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br label %Loop
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; CHECK-LABEL: @test2(
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; CHECK: Entry:
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; CHECK-NEXT: %.promoted = load i32* getelementptr inbounds (i32* @X, i64 1)
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; CHECK-NEXT: br label %Loop
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Loop: ; preds = %Loop, %0
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%X1 = getelementptr i32* @X, i64 1 ; <i32*> [#uses=1]
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%A = load i32* %X1 ; <i32> [#uses=1]
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%V = add i32 %A, 1 ; <i32> [#uses=1]
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%X2 = getelementptr i32* @X, i64 1 ; <i32*> [#uses=1]
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store i32 %V, i32* %X2
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br i1 false, label %Loop, label %Exit
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Exit: ; preds = %Loop
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ret void
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; CHECK: Exit:
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; CHECK-NEXT: store i32 %V, i32* getelementptr inbounds (i32* @X, i64 1)
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; CHECK-NEXT: ret void
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}
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define void @test3(i32 %i) {
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; CHECK-LABEL: @test3(
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br label %Loop
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Loop:
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; Should not promote this to a register
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%x = load volatile i32* @X
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%x2 = add i32 %x, 1
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store i32 %x2, i32* @X
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br i1 true, label %Out, label %Loop
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; CHECK: Loop:
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; CHECK-NEXT: load volatile
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Out: ; preds = %Loop
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ret void
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}
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; PR8041
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define void @test4(i8* %x, i8 %n) {
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; CHECK-LABEL: @test4(
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%handle1 = alloca i8*
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%handle2 = alloca i8*
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store i8* %x, i8** %handle1
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br label %loop
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loop:
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%tmp = getelementptr i8* %x, i64 8
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store i8* %tmp, i8** %handle2
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br label %subloop
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subloop:
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%count = phi i8 [ 0, %loop ], [ %nextcount, %subloop ]
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%offsetx2 = load i8** %handle2
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store i8 %n, i8* %offsetx2
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%newoffsetx2 = getelementptr i8* %offsetx2, i64 -1
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store i8* %newoffsetx2, i8** %handle2
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%nextcount = add i8 %count, 1
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%innerexitcond = icmp sge i8 %nextcount, 8
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br i1 %innerexitcond, label %innerexit, label %subloop
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; Should have promoted 'handle2' accesses.
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; CHECK: subloop:
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; CHECK-NEXT: phi i8* [
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; CHECK-NEXT: %count = phi i8 [
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; CHECK-NEXT: store i8 %n
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; CHECK-NOT: store
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; CHECK: br i1
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innerexit:
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%offsetx1 = load i8** %handle1
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%val = load i8* %offsetx1
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%cond = icmp eq i8 %val, %n
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br i1 %cond, label %exit, label %loop
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; Should not have promoted offsetx1 loads.
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; CHECK: innerexit:
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; CHECK: %val = load i8* %offsetx1
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; CHECK: %cond = icmp eq i8 %val, %n
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; CHECK: br i1 %cond, label %exit, label %loop
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exit:
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ret void
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}
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define void @test5(i32 %i, i32** noalias %P2) {
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Entry:
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br label %Loop
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; CHECK-LABEL: @test5(
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; CHECK: Entry:
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; CHECK-NEXT: load i32* @X
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; CHECK-NEXT: br label %Loop
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Loop: ; preds = %Loop, %0
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%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] ; <i32> [#uses=1]
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%x = load i32* @X ; <i32> [#uses=1]
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%x2 = add i32 %x, 1 ; <i32> [#uses=1]
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store i32 %x2, i32* @X
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store volatile i32* @X, i32** %P2
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%Next = add i32 %j, 1 ; <i32> [#uses=2]
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%cond = icmp eq i32 %Next, 0 ; <i1> [#uses=1]
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br i1 %cond, label %Out, label %Loop
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Out:
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ret void
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; CHECK: Out:
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; CHECK-NEXT: store i32 %x2, i32* @X
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; CHECK-NEXT: ret void
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}
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; PR14753 - Preserve TBAA tags when promoting values in a loop.
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define void @test6(i32 %n, float* nocapture %a, i32* %gi) {
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entry:
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store i32 0, i32* %gi, align 4, !tbaa !0
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%cmp1 = icmp slt i32 0, %n
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br i1 %cmp1, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%storemerge2 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
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%idxprom = sext i32 %storemerge2 to i64
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%arrayidx = getelementptr inbounds float* %a, i64 %idxprom
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store float 0.000000e+00, float* %arrayidx, align 4, !tbaa !3
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%0 = load i32* %gi, align 4, !tbaa !0
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%inc = add nsw i32 %0, 1
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store i32 %inc, i32* %gi, align 4, !tbaa !0
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%cmp = icmp slt i32 %inc, %n
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br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge
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for.cond.for.end_crit_edge: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.cond.for.end_crit_edge, %entry
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ret void
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; CHECK: for.body.lr.ph:
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; CHECK-NEXT: %gi.promoted = load i32* %gi, align 4, !tbaa !0
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; CHECK: for.cond.for.end_crit_edge:
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; CHECK-NEXT: store i32 %inc, i32* %gi, align 4, !tbaa !0
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}
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!0 = metadata !{metadata !4, metadata !4, i64 0}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA"}
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!3 = metadata !{metadata !5, metadata !5, i64 0}
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!4 = metadata !{metadata !"int", metadata !1}
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!5 = metadata !{metadata !"float", metadata !1}
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