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- ; RUN: opt < %s -indvars -S | FileCheck %s
- ;
- ; PR1301
- ; Do a bunch of analysis and prove that the loops can use an i32 trip
- ; count without casting.
- ;
- ; Note that all four functions should actually be converted to
- ; memset. However, this test case validates indvars behavior. We
- ; don't check that phis are "folded together" because that is a job
- ; for loop strength reduction. But indvars must remove sext, zext, and add i8.
- ;
- ; CHECK-NOT: {{sext|zext|add i8}}
- ; ModuleID = 'ada.bc'
- 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-n8:16:32"
- target triple = "i686-pc-linux-gnu"
- define void @kinds__sbytezero([256 x i32]* nocapture %a) nounwind {
- bb.thread:
- %tmp46 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 0 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp46
- br label %bb
- bb: ; preds = %bb, %bb.thread
- %i.0.reg2mem.0 = phi i8 [ -128, %bb.thread ], [ %tmp8, %bb ] ; <i8> [#uses=1]
- %tmp8 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=3]
- %tmp1 = sext i8 %tmp8 to i32 ; <i32> [#uses=1]
- %tmp3 = add i32 %tmp1, 128 ; <i32> [#uses=1]
- %tmp4 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 %tmp3 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp4
- %0 = icmp eq i8 %tmp8, 127 ; <i1> [#uses=1]
- br i1 %0, label %return, label %bb
- return: ; preds = %bb
- ret void
- }
- define void @kinds__ubytezero([256 x i32]* nocapture %a) nounwind {
- bb.thread:
- %tmp35 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 0 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp35
- br label %bb
- bb: ; preds = %bb, %bb.thread
- %i.0.reg2mem.0 = phi i8 [ 0, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=1]
- %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=3]
- %tmp1 = zext i8 %tmp7 to i32 ; <i32> [#uses=1]
- %tmp3 = getelementptr [256 x i32], [256 x i32]* %a, i32 0, i32 %tmp1 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp3
- %0 = icmp eq i8 %tmp7, -1 ; <i1> [#uses=1]
- br i1 %0, label %return, label %bb
- return: ; preds = %bb
- ret void
- }
- define void @kinds__srangezero([21 x i32]* nocapture %a) nounwind {
- bb.thread:
- br label %bb
- bb: ; preds = %bb, %bb.thread
- %i.0.reg2mem.0 = phi i8 [ -10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
- %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
- %tmp4 = add i32 %tmp12, 10 ; <i32> [#uses=1]
- %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp5
- %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
- %0 = icmp sgt i8 %tmp7, 10 ; <i1> [#uses=1]
- br i1 %0, label %return, label %bb
- return: ; preds = %bb
- ret void
- }
- define void @kinds__urangezero([21 x i32]* nocapture %a) nounwind {
- bb.thread:
- br label %bb
- bb: ; preds = %bb, %bb.thread
- %i.0.reg2mem.0 = phi i8 [ 10, %bb.thread ], [ %tmp7, %bb ] ; <i8> [#uses=2]
- %tmp12 = sext i8 %i.0.reg2mem.0 to i32 ; <i32> [#uses=1]
- %tmp4 = add i32 %tmp12, -10 ; <i32> [#uses=1]
- %tmp5 = getelementptr [21 x i32], [21 x i32]* %a, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
- store i32 0, i32* %tmp5
- %tmp7 = add i8 %i.0.reg2mem.0, 1 ; <i8> [#uses=2]
- %0 = icmp sgt i8 %tmp7, 30 ; <i1> [#uses=1]
- br i1 %0, label %return, label %bb
- return: ; preds = %bb
- ret void
- }
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