mirror of
https://github.com/c64scene-ar/llvm-6502.git
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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
82 lines
2.1 KiB
LLVM
82 lines
2.1 KiB
LLVM
; RUN: opt < %s -jump-threading -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin7"
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; Test that we can thread through the block with the partially redundant load (%2).
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; rdar://6402033
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define i32 @test1(i32* %P) nounwind {
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; CHECK-LABEL: @test1(
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entry:
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%0 = tail call i32 (...)* @f1() nounwind ; <i32> [#uses=1]
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%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
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br i1 %1, label %bb1, label %bb
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bb: ; preds = %entry
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; CHECK: bb1.thread:
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; CHECK: store
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; CHECK: br label %bb3
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store i32 42, i32* %P, align 4
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br label %bb1
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bb1: ; preds = %entry, %bb
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%res.0 = phi i32 [ 1, %bb ], [ 0, %entry ] ; <i32> [#uses=2]
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%2 = load i32* %P, align 4 ; <i32> [#uses=1]
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%3 = icmp sgt i32 %2, 36 ; <i1> [#uses=1]
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br i1 %3, label %bb3, label %bb2
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bb2: ; preds = %bb1
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%4 = tail call i32 (...)* @f2() nounwind ; <i32> [#uses=0]
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ret i32 %res.0
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bb3: ; preds = %bb1
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; CHECK: bb3:
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; CHECK: %res.01 = phi i32 [ 1, %bb1.thread ], [ 0, %bb1 ]
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; CHECK: ret i32 %res.01
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ret i32 %res.0
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}
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declare i32 @f1(...)
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declare i32 @f2(...)
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;; Check that we preserve TBAA information.
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; rdar://11039258
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define i32 @test2(i32* %P) nounwind {
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; CHECK-LABEL: @test2(
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entry:
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%0 = tail call i32 (...)* @f1() nounwind ; <i32> [#uses=1]
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%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
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br i1 %1, label %bb1, label %bb
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bb: ; preds = %entry
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; CHECK: bb1.thread:
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; CHECK: store{{.*}}, !tbaa !0
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; CHECK: br label %bb3
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store i32 42, i32* %P, align 4, !tbaa !0
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br label %bb1
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bb1: ; preds = %entry, %bb
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%res.0 = phi i32 [ 1, %bb ], [ 0, %entry ]
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%2 = load i32* %P, align 4, !tbaa !0
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%3 = icmp sgt i32 %2, 36
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br i1 %3, label %bb3, label %bb2
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bb2: ; preds = %bb1
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%4 = tail call i32 (...)* @f2() nounwind
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ret i32 %res.0
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bb3: ; preds = %bb1
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; CHECK: bb3:
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; CHECK: %res.01 = phi i32 [ 1, %bb1.thread ], [ 0, %bb1 ]
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; CHECK: ret i32 %res.01
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ret i32 %res.0
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}
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!0 = metadata !{metadata !3, metadata !3, i64 0}
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!1 = metadata !{metadata !"omnipotent char", metadata !2}
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!2 = metadata !{metadata !"Simple C/C++ TBAA", null}
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!3 = metadata !{metadata !"int", metadata !1}
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