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[Test] Add signed version of a test

This commit is contained in:
Max Kazantsev 2020-09-16 11:30:21 +07:00
parent 00f09dd4c1
commit 8a04cdb510
1 changed files with 52 additions and 2 deletions
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54
llvm/test/Transforms/IndVarSimplify/predicated_ranges.ll
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@ -10,8 +10,8 @@
; 1 <= iv <= len [3]; ; 1 <= iv <= len [3];
; 4. iv.next = iv - 1 and [3], therefore ; 4. iv.next = iv - 1 and [3], therefore
; 0 <= iv.next < len. ; 0 <= iv.next < len.
define void @test_predicated_simple(i32* %p, i32* %arr) { define void @test_predicated_simple_unsigned(i32* %p, i32* %arr) {
; CHECK-LABEL: @test_predicated_simple( ; CHECK-LABEL: @test_predicated_simple_unsigned(
; CHECK-NEXT: preheader: ; CHECK-NEXT: preheader:
; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4, [[RNG0:!range !.*]] ; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4, [[RNG0:!range !.*]]
; CHECK-NEXT: br label [[LOOP:%.*]] ; CHECK-NEXT: br label [[LOOP:%.*]]
@ -60,4 +60,54 @@ fail:
unreachable unreachable
} }
define void @test_predicated_simple_signed(i32* %p, i32* %arr) {
; CHECK-LABEL: @test_predicated_simple_signed(
; CHECK-NEXT: preheader:
; CHECK-NEXT: [[LEN:%.*]] = load i32, i32* [[P:%.*]], align 4, [[RNG0]]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[LEN]], [[PREHEADER:%.*]] ], [ [[IV_NEXT:%.*]], [[BACKEDGE:%.*]] ]
; CHECK-NEXT: [[ZERO_COND:%.*]] = icmp eq i32 [[IV]], 0
; CHECK-NEXT: br i1 [[ZERO_COND]], label [[EXIT:%.*]], label [[RANGE_CHECK_BLOCK:%.*]]
; CHECK: range_check_block:
; CHECK-NEXT: [[IV_NEXT]] = sub i32 [[IV]], 1
; CHECK-NEXT: [[RANGE_CHECK:%.*]] = icmp slt i32 [[IV_NEXT]], [[LEN]]
; CHECK-NEXT: br i1 [[RANGE_CHECK]], label [[BACKEDGE]], label [[FAIL:%.*]]
; CHECK: backedge:
; CHECK-NEXT: [[EL_PTR:%.*]] = getelementptr i32, i32* [[P]], i32 [[IV]]
; CHECK-NEXT: [[EL:%.*]] = load i32, i32* [[EL_PTR]], align 4
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp eq i32 [[EL]], 0
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[LOOP]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret void
; CHECK: fail:
; CHECK-NEXT: unreachable
;
preheader:
%len = load i32, i32* %p, !range !0
br label %loop
loop:
%iv = phi i32 [%len, %preheader], [%iv.next, %backedge]
%zero_cond = icmp eq i32 %iv, 0
br i1 %zero_cond, label %exit, label %range_check_block
range_check_block:
%iv.next = sub i32 %iv, 1
%range_check = icmp slt i32 %iv.next, %len
br i1 %range_check, label %backedge, label %fail
backedge:
%el.ptr = getelementptr i32, i32* %p, i32 %iv
%el = load i32, i32* %el.ptr
%loop.cond = icmp eq i32 %el, 0
br i1 %loop.cond, label %loop, label %exit
exit:
ret void
fail:
unreachable
}
!0 = !{i32 0, i32 2147483647} !0 = !{i32 0, i32 2147483647}