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|
; RUN: opt < %s -indvars -S | FileCheck %s
; Provide legal integer types.
target datalayout = "n8:16:32:64"
; CHECK-NOT: sext
define i64 @test(i64* nocapture %first, i32 %count) nounwind readonly {
entry:
%t0 = icmp sgt i32 %count, 0 ; <i1> [#uses=1]
br i1 %t0, label %bb.nph, label %bb2
bb.nph: ; preds = %entry
br label %bb
bb: ; preds = %bb1, %bb.nph
%result.02 = phi i64 [ %t5, %bb1 ], [ 0, %bb.nph ] ; <i64> [#uses=1]
%n.01 = phi i32 [ %t6, %bb1 ], [ 0, %bb.nph ] ; <i32> [#uses=2]
%t1 = sext i32 %n.01 to i64 ; <i64> [#uses=1]
%t2 = getelementptr i64, i64* %first, i64 %t1 ; <i64*> [#uses=1]
%t3 = load i64, i64* %t2, align 8 ; <i64> [#uses=1]
%t4 = lshr i64 %t3, 4 ; <i64> [#uses=1]
%t5 = add i64 %t4, %result.02 ; <i64> [#uses=2]
%t6 = add i32 %n.01, 1 ; <i32> [#uses=2]
br label %bb1
bb1: ; preds = %bb
%t7 = icmp slt i32 %t6, %count ; <i1> [#uses=1]
br i1 %t7, label %bb, label %bb1.bb2_crit_edge
bb1.bb2_crit_edge: ; preds = %bb1
%.lcssa = phi i64 [ %t5, %bb1 ] ; <i64> [#uses=1]
br label %bb2
bb2: ; preds = %bb1.bb2_crit_edge, %entry
%result.0.lcssa = phi i64 [ %.lcssa, %bb1.bb2_crit_edge ], [ 0, %entry ] ; <i64> [#uses=1]
ret i64 %result.0.lcssa
}
define void @foo(i16 signext %N, i32* nocapture %P) nounwind {
entry:
%t0 = icmp sgt i16 %N, 0 ; <i1> [#uses=1]
br i1 %t0, label %bb.nph, label %return
bb.nph: ; preds = %entry
br label %bb
bb: ; preds = %bb1, %bb.nph
%i.01 = phi i16 [ %t3, %bb1 ], [ 0, %bb.nph ] ; <i16> [#uses=2]
%t1 = sext i16 %i.01 to i64 ; <i64> [#uses=1]
%t2 = getelementptr i32, i32* %P, i64 %t1 ; <i32*> [#uses=1]
store i32 123, i32* %t2, align 4
%t3 = add i16 %i.01, 1 ; <i16> [#uses=2]
br label %bb1
bb1: ; preds = %bb
%t4 = icmp slt i16 %t3, %N ; <i1> [#uses=1]
br i1 %t4, 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
}
; Test cases from PR1301:
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
}
define void @promote_latch_condition_decrementing_loop_01(i32* %p, i32* %a) {
; CHECK-LABEL: @promote_latch_condition_decrementing_loop_01(
; CHECK-NOT: trunc
entry:
%len = load i32, i32* %p, align 4, !range !0
%len.minus.1 = add nsw i32 %len, -1
%zero_check = icmp eq i32 %len, 0
br i1 %zero_check, label %loopexit, label %preheader
preheader:
br label %loop
loopexit:
ret void
loop:
%iv = phi i32 [ %iv.next, %loop ], [ %len.minus.1, %preheader ]
; CHECK: %indvars.iv = phi i64
%iv.wide = zext i32 %iv to i64
%el = getelementptr inbounds i32, i32* %a, i64 %iv.wide
store atomic i32 0, i32* %el unordered, align 4
%iv.next = add nsw i32 %iv, -1
; CHECK: %loopcond = icmp slt i64 %indvars.iv, 1
%loopcond = icmp slt i32 %iv, 1
br i1 %loopcond, label %loopexit, label %loop
}
define void @promote_latch_condition_decrementing_loop_02(i32* %p, i32* %a) {
; CHECK-LABEL: @promote_latch_condition_decrementing_loop_02(
; CHECK-NOT: trunc
entry:
%len = load i32, i32* %p, align 4, !range !0
%zero_check = icmp eq i32 %len, 0
br i1 %zero_check, label %loopexit, label %preheader
preheader:
br label %loop
loopexit:
ret void
loop:
%iv = phi i32 [ %iv.next, %loop ], [ %len, %preheader ]
; CHECK: %indvars.iv = phi i64
%iv.wide = zext i32 %iv to i64
%el = getelementptr inbounds i32, i32* %a, i64 %iv.wide
store atomic i32 0, i32* %el unordered, align 4
%iv.next = add nsw i32 %iv, -1
; CHECK: %loopcond = icmp slt i64 %indvars.iv, 1
%loopcond = icmp slt i32 %iv, 1
br i1 %loopcond, label %loopexit, label %loop
}
define void @promote_latch_condition_decrementing_loop_03(i32* %p, i32* %a) {
; CHECK-LABEL: @promote_latch_condition_decrementing_loop_03(
; CHECK-NOT: trunc
entry:
%len = load i32, i32* %p, align 4, !range !0
%len.plus.1 = add i32 %len, 1
%zero_check = icmp eq i32 %len, 0
br i1 %zero_check, label %loopexit, label %preheader
preheader:
br label %loop
loopexit:
ret void
loop:
%iv = phi i32 [ %iv.next, %loop ], [ %len.plus.1, %preheader ]
; CHECK: %indvars.iv = phi i64
%iv.wide = zext i32 %iv to i64
%el = getelementptr inbounds i32, i32* %a, i64 %iv.wide
store atomic i32 0, i32* %el unordered, align 4
%iv.next = add nsw i32 %iv, -1
; CHECK: %loopcond = icmp slt i64 %indvars.iv, 1
%loopcond = icmp slt i32 %iv, 1
br i1 %loopcond, label %loopexit, label %loop
}
define void @promote_latch_condition_decrementing_loop_04(i32* %p, i32* %a, i1 %cond) {
; CHECK-LABEL: @promote_latch_condition_decrementing_loop_04(
; CHECK-NOT: trunc
entry:
%len = load i32, i32* %p, align 4, !range !0
%len.minus.1 = add nsw i32 %len, -1
br i1 %cond, label %if.true, label %if.false
if.true:
br label %merge
if.false:
br label %merge
merge:
%iv_start = phi i32 [ %len, %if.true ], [%len.minus.1, %if.false ]
%zero_check = icmp eq i32 %len, 0
br i1 %zero_check, label %loopexit, label %preheader
preheader:
br label %loop
loopexit:
ret void
loop:
%iv = phi i32 [ %iv.next, %loop ], [ %iv_start, %preheader ]
; CHECK: %indvars.iv = phi i64
%iv.wide = zext i32 %iv to i64
%el = getelementptr inbounds i32, i32* %a, i64 %iv.wide
store atomic i32 0, i32* %el unordered, align 4
%iv.next = add nsw i32 %iv, -1
; CHECK: %loopcond = icmp slt i64 %indvars.iv, 1
%loopcond = icmp slt i32 %iv, 1
br i1 %loopcond, label %loopexit, label %loop
}
!0 = !{i32 0, i32 2147483647}
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