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4177e6fff5
This was done through the aid of a terrible Perl creation. I will not paste any of the horrors here. Suffice to say, it require multiple staged rounds of replacements, state carried between, and a few nested-construct-parsing hacks that I'm not proud of. It happens, by luck, to be able to deal with all the TCL-quoting patterns in evidence in the LLVM test suite. If anyone is maintaining large out-of-tree test trees, feel free to poke me and I'll send you the steps I used to convert things, as well as answer any painful questions etc. IRC works best for this type of thing I find. Once converted, switch the LLVM lit config to use ShTests the same as Clang. In addition to being able to delete large amounts of Python code from 'lit', this will also simplify the entire test suite and some of lit's architecture. Finally, the test suite runs 33% faster on Linux now. ;] For my 16-hardware-thread (2x 4-core xeon e5520): 36s -> 24s git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159525 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
2.3 KiB
LLVM
53 lines
2.3 KiB
LLVM
; RUN: opt < %s -S -indvars | grep "= icmp" | count 3
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; PR4914.ll
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; Indvars should be able to do range analysis and eliminate icmps.
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; There are two here which cannot be eliminated.
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; There's one that icmp which can be eliminated and which indvars currently
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; cannot eliminate, because it requires analyzing more than just the
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; range of the induction variable.
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@0 = private constant [4 x i8] c"%d\0A\00", align 1 ; <[4 x i8]*> [#uses=1]
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define i32 @main() nounwind {
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bb:
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br label %bb1
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bb1: ; preds = %bb14, %bb
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%t = phi i32 [ 0, %bb ], [ %t19, %bb14 ] ; <i32> [#uses=5]
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%t2 = phi i32 [ 0, %bb ], [ %t18, %bb14 ] ; <i32> [#uses=1]
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%t3 = icmp slt i32 %t, 0 ; <i1> [#uses=1]
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br i1 %t3, label %bb7, label %bb4
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bb4: ; preds = %bb1
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%t5 = icmp sgt i32 %t, 255 ; <i1> [#uses=1]
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%t6 = select i1 %t5, i32 255, i32 %t ; <i32> [#uses=1]
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br label %bb7
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bb7: ; preds = %bb4, %bb1
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%t8 = phi i32 [ %t6, %bb4 ], [ 0, %bb1 ] ; <i32> [#uses=1]
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%t9 = sub i32 0, %t ; <i32> [#uses=3]
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%t10 = icmp slt i32 %t9, 0 ; <i1> [#uses=1]
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br i1 %t10, label %bb14, label %bb11
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bb11: ; preds = %bb7
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%t12 = icmp sgt i32 %t9, 255 ; <i1> [#uses=1]
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%t13 = select i1 %t12, i32 255, i32 %t9 ; <i32> [#uses=1]
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br label %bb14
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bb14: ; preds = %bb11, %bb7
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%t15 = phi i32 [ %t13, %bb11 ], [ 0, %bb7 ] ; <i32> [#uses=1]
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%t16 = add nsw i32 %t2, 255 ; <i32> [#uses=1]
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%t17 = add nsw i32 %t16, %t8 ; <i32> [#uses=1]
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%t18 = add nsw i32 %t17, %t15 ; <i32> [#uses=2]
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%t19 = add nsw i32 %t, 1 ; <i32> [#uses=2]
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%t20 = icmp slt i32 %t19, 1000000000 ; <i1> [#uses=1]
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br i1 %t20, label %bb1, label %bb21
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bb21: ; preds = %bb14
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%t22 = call i32 (i8*, ...)* @printf(i8* noalias getelementptr inbounds ([4 x i8]* @0, i32 0, i32 0), i32 %t18) nounwind
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ret i32 0
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}
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declare i32 @printf(i8* noalias nocapture, ...) nounwind
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