mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-30 16:34:03 +00:00
15cab2817b
trip counts that use signed comparisons. It's not obviously the best approach for preserving trip count information, and at any rate there isn't anything in the tree right now that makes use of that, so for now always using zero-extensions is preferable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65347 91177308-0d34-0410-b5e6-96231b3b80d8
100 lines
3.2 KiB
LLVM
100 lines
3.2 KiB
LLVM
; RUN: llvm-as < %s | opt -indvars | llvm-dis > %t
|
|
; RUN: not grep sext %t
|
|
|
|
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* %first, i64 %t1 ; <i64*> [#uses=1]
|
|
%t3 = load 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* %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]* %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]* %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
|
|
}
|