derek.holloway
7502bf64a4
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49 lines
1.8 KiB
LLVM
49 lines
1.8 KiB
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
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; The multiply in bb2 must not be reduced to an add, as the sext causes the
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; %1 argument to become negative after a while.
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; CHECK: sext i8
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; CHECK: mul i32
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; CHECK: store i32
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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-darwin9.6"
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@table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <ptr> [#uses=2]
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define i32 @main() nounwind {
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bb4.thread:
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br label %bb2
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bb2: ; preds = %bb4, %bb2, %bb4.thread
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%i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ] ; <i32> [#uses=4]
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%j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ] ; <i32> [#uses=3]
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%0 = trunc i32 %j.0.reg2mem.0 to i8 ; <i8> [#uses=1]
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%1 = sext i8 %0 to i32 ; <i32> [#uses=1]
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%2 = mul i32 %1, %i.0.reg2mem.0.ph ; <i32> [#uses=1]
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%3 = getelementptr [32 x [256 x i32]], ptr @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0 ; <ptr> [#uses=1]
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store i32 %2, ptr %3, align 4
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%indvar.next = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, 256 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb4, label %bb2
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bb4: ; preds = %bb2
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%indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1 ; <i32> [#uses=2]
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%exitcond10 = icmp eq i32 %indvar.next9, 32 ; <i1> [#uses=1]
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br i1 %exitcond10, label %bb5, label %bb2
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bb5: ; preds = %bb4
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%4 = load i32, ptr getelementptr ([32 x [256 x i32]], ptr @table, i32 0, i32 9, i32 132), align 16 ; <i32> [#uses=1]
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%5 = icmp eq i32 %4, -1116 ; <i1> [#uses=1]
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br i1 %5, label %bb7, label %bb6
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bb6: ; preds = %bb5
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tail call void @abort() noreturn nounwind
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unreachable
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bb7: ; preds = %bb5
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ret i32 0
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}
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declare void @abort() noreturn nounwind
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