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- ; RUN: opt < %s -indvars -S | FileCheck %s
- ; Indvars should insert a 64-bit induction variable to eliminate the
- ; sext for the addressing, however it shouldn't eliminate the sext
- ; on the other phi, since that value undergoes signed wrapping.
- ; Provide legal integer types.
- target datalayout = "n8:16:32:64"
- define void @foo(i32* nocapture %d, i32 %n) nounwind {
- entry:
- %0 = icmp sgt i32 %n, 0 ; <i1> [#uses=1]
- br i1 %0, label %bb.nph, label %return
- bb.nph: ; preds = %entry
- br label %bb
- ; CHECK: bb:
- ; CHECK: phi i64
- ; CHECK: sext i8
- ; CHECK-NOT: sext
- bb: ; preds = %bb1, %bb.nph
- %i.02 = phi i32 [ %5, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=2]
- %p.01 = phi i8 [ %4, %bb1 ], [ -1, %bb.nph ] ; <i8> [#uses=2]
- %1 = sext i8 %p.01 to i32 ; <i32> [#uses=1]
- %2 = sext i32 %i.02 to i64 ; <i64> [#uses=1]
- %3 = getelementptr i32, i32* %d, i64 %2 ; <i32*> [#uses=1]
- store i32 %1, i32* %3, align 4
- %4 = add i8 %p.01, 1 ; <i8> [#uses=1]
- %5 = add i32 %i.02, 1 ; <i32> [#uses=2]
- br label %bb1
- bb1: ; preds = %bb
- %6 = icmp slt i32 %5, %n ; <i1> [#uses=1]
- br i1 %6, label %bb, label %bb1.return_crit_edge
- bb1.return_crit_edge: ; preds = %bb1
- br label %return
- return: ; preds = %bb1.return_crit_edge, %entry
- ret void
- }
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