bcdcf984cc
This updates NewGVN test cases that were running "opt -basic-aa -newgvn ..." to run "opt -passes=newgvn ..." instead. The pipeline will be more similar to what we used to have with legacy PM by doing it this way. The compatility mode that we've been using for awhile during transition from legacy PM to new PM, i.e. using the legacy syntax together with new PM, has resulted in a pipeline such as -passes='function(require<basic-aa>),function(newgvn)' but running the analysis in a separate function pass manager seem overly complicated for these tests. Another difference is that we will get the default aa-pipeline instead of only running basic-aa. That might be a bit questioned (given that the tests originally specified basic-aa). The output is however identival for all the test cases modified here regardless of using basic-aa or the default aa-pipeline. This is also another small step towards removal of the support for using the legacy PM syntax in opt. Differential Revision: https://reviews.llvm.org/D118340
46 lines
1.8 KiB
LLVM
46 lines
1.8 KiB
LLVM
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
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; Should delete the second call to strlen even though the intervening strchr call exists.
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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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define i8* @test(i8* %P, i8* %Q, i32 %x, i32 %y) nounwind readonly {
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entry:
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%0 = tail call i32 @strlen(i8* %P) ; <i32> [#uses=2]
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%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
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br i1 %1, label %bb, label %bb1
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bb: ; preds = %entry
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%2 = sdiv i32 %x, %y ; <i32> [#uses=1]
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br label %bb1
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bb1: ; preds = %bb, %entry
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%x_addr.0 = phi i32 [ %2, %bb ], [ %x, %entry ] ; <i32> [#uses=1]
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%3 = tail call i8* @strchr(i8* %Q, i32 97) ; <i8*> [#uses=1]
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%4 = tail call i32 @strlen(i8* %P) ; <i32> [#uses=1]
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%5 = add i32 %x_addr.0, %0 ; <i32> [#uses=1]
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%.sum = sub i32 %5, %4 ; <i32> [#uses=1]
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%6 = getelementptr i8, i8* %3, i32 %.sum ; <i8*> [#uses=1]
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ret i8* %6
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}
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; CHECK: define i8* @test(i8* %P, i8* %Q, i32 %x, i32 %y) #0 {
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; CHECK: entry:
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; CHECK-NEXT: %0 = tail call i32 @strlen(i8* %P)
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; CHECK-NEXT: %1 = icmp eq i32 %0, 0
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; CHECK-NEXT: br i1 %1, label %bb, label %bb1
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; CHECK: bb:
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; CHECK-NEXT: %2 = sdiv i32 %x, %y
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; CHECK-NEXT: br label %bb1
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; CHECK: bb1:
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; CHECK-NEXT: %x_addr.0 = phi i32 [ %2, %bb ], [ %x, %entry ]
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; CHECK-NEXT: %3 = tail call i8* @strchr(i8* %Q, i32 97)
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; CHECK-NEXT: %4 = add i32 %x_addr.0, %0
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; CHECK-NEXT: %5 = getelementptr i8, i8* %3, i32 %x_addr.0
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; CHECK-NEXT: ret i8* %5
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; CHECK: }
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declare i32 @strlen(i8*) nounwind readonly
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declare i8* @strchr(i8*, i32) nounwind readonly
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