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; RUN: opt < %s -passes=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.
;
; 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"
; CHECK-LABEL: @kinds__sbytezero
; CHECK: bb.thread:
; CHECK: sext
; CHECK: bb:
; CHECK-NOT: {{sext i8|zext i8|add i8|trunc}}
define void @kinds__sbytezero(ptr nocapture %a) nounwind {
bb.thread:
%tmp46 = getelementptr [256 x i32], ptr %a, i32 0, i32 0 ; <ptr> [#uses=1]
store i32 0, ptr %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], ptr %a, i32 0, i32 %tmp3 ; <ptr> [#uses=1]
store i32 0, ptr %tmp4
%0 = icmp eq i8 %tmp8, 127 ; <i1> [#uses=1]
br i1 %0, label %return, label %bb
return: ; preds = %bb
ret void
}
; CHECK-LABEL: @kinds__ubytezero
define void @kinds__ubytezero(ptr nocapture %a) nounwind {
bb.thread:
%tmp35 = getelementptr [256 x i32], ptr %a, i32 0, i32 0 ; <ptr> [#uses=1]
store i32 0, ptr %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], ptr %a, i32 0, i32 %tmp1 ; <ptr> [#uses=1]
store i32 0, ptr %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(ptr 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], ptr %a, i32 0, i32 %tmp4 ; <ptr> [#uses=1]
store i32 0, ptr %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(ptr 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], ptr %a, i32 0, i32 %tmp4 ; <ptr> [#uses=1]
store i32 0, ptr %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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