; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
; RUN: opt -passes=ipsccp -S %s | FileCheck %s
%t1 = type opaque
@e = common global i32 0, align 4
; Test that we a skip unknown values depending on a unknown tracked call, until the call gets resolved. The @test1 and @test2 variants are very similar, they just check 2 different kinds of users (icmp and zext)
define i32 @test1_m(i32 %h) {
; CHECK-LABEL: define {{[^@]+}}@test1_m
; CHECK-SAME: (i32 [[H:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CONV:%.*]] = trunc i32 [[H]] to i8
; CHECK-NEXT: [[CALL:%.*]] = call i32 @test1_k(i8 [[CONV]], i32 0)
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[H]] to i64
; CHECK-NEXT: [[TMP0:%.*]] = inttoptr i64 [[CONV1]] to %t1*
; CHECK-NEXT: [[CALL2:%.*]] = call i1 @test1_g(%t1* [[TMP0]], i32 1)
; CHECK-NEXT: ret i32 undef
;
entry:
%conv = trunc i32 %h to i8
%call = call i32 @test1_k(i8 %conv, i32 0)
%conv1 = sext i32 %h to i64
%0 = inttoptr i64 %conv1 to %t1*
%call2 = call i1 @test1_g(%t1* %0, i32 1)
ret i32 undef
; uselistorder directives
uselistorder i32 %h, { 1, 0 }
}
declare void @use.1(i1)
define internal i32 @test1_k(i8 %h, i32 %i) {
; CHECK-LABEL: define {{[^@]+}}@test1_k
; CHECK-SAME: (i8 [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @e, align 4
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TMP0]] to i64
; CHECK-NEXT: [[TMP1:%.*]] = inttoptr i64 [[CONV]] to %t1*
; CHECK-NEXT: [[CALL:%.*]] = call i1 @test1_g(%t1* [[TMP1]], i32 0)
; CHECK-NEXT: call void @use.1(i1 false)
; CHECK-NEXT: ret i32 undef
;
entry:
%0 = load i32, i32* @e, align 4
%conv = sext i32 %0 to i64
%1 = inttoptr i64 %conv to %t1*
%call = call i1 @test1_g(%t1* %1, i32 %i)
%frombool.1 = zext i1 %call to i8
%tobool.1 = trunc i8 %frombool.1 to i1
call void @use.1(i1 %tobool.1)
ret i32 undef
}
define internal i1 @test1_g(%t1* %h, i32 %i) #0 {
; CHECK-LABEL: define {{[^@]+}}@test1_g
; CHECK-SAME: (%t1* [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[I]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[LAND_RHS:%.*]], label [[LAND_END:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: [[CALL:%.*]] = call i32 (...) @test1_j()
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp ne i32 [[CALL]], 0
; CHECK-NEXT: br label [[LAND_END]]
; CHECK: land.end:
; CHECK-NEXT: [[TMP0:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[TOBOOL1]], [[LAND_RHS]] ]
; CHECK-NEXT: ret i1 undef
;
entry:
%tobool = icmp ne i32 %i, 0
br i1 %tobool, label %land.rhs, label %land.end
land.rhs: ; preds = %entry
%call = call i32 (...) @test1_j()
%tobool1 = icmp ne i32 %call, 0
br label %land.end
land.end: ; preds = %land.rhs, %entry
%0 = phi i1 [ false, %entry ], [ %tobool1, %land.rhs ]
ret i1 false
}
declare i32 @test1_j(...)
define i32 @test2_m(i32 %h) #0 {
; CHECK-LABEL: define {{[^@]+}}@test2_m
; CHECK-SAME: (i32 [[H:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CONV:%.*]] = trunc i32 [[H]] to i8
; CHECK-NEXT: [[CALL:%.*]] = call i32 @test2_k(i8 [[CONV]], i32 0)
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[H]] to i64
; CHECK-NEXT: [[TMP0:%.*]] = inttoptr i64 [[CONV1]] to %t1*
; CHECK-NEXT: [[CALL2:%.*]] = call i1 @test2_g(%t1* [[TMP0]], i32 1)
; CHECK-NEXT: ret i32 undef
;
entry:
%conv = trunc i32 %h to i8
%call = call i32 @test2_k(i8 %conv, i32 0)
%conv1 = sext i32 %h to i64
%0 = inttoptr i64 %conv1 to %t1*
%call2 = call i1 @test2_g(%t1* %0, i32 1)
ret i32 undef
; uselistorder directives
uselistorder i32 %h, { 1, 0 }
}
; TODO: We could do better for the return value of call i1 @test3_g, if we
; resolve the unknown values there first.
define internal i32 @test2_k(i8 %h, i32 %i) {
; CHECK-LABEL: define {{[^@]+}}@test2_k
; CHECK-SAME: (i8 [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @e, align 4
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TMP0]] to i64
; CHECK-NEXT: [[TMP1:%.*]] = inttoptr i64 [[CONV]] to %t1*
; CHECK-NEXT: [[CALL:%.*]] = call i1 @test3_g(%t1* [[TMP1]], i32 0)
; CHECK-NEXT: call void @use.1(i1 false)
; CHECK-NEXT: ret i32 undef
;
entry:
%0 = load i32, i32* @e, align 4
%conv = sext i32 %0 to i64
%1 = inttoptr i64 %conv to %t1*
%call = call i1 @test3_g(%t1* %1, i32 %i)
%frombool = icmp slt i1 %call, 1
%add = add i1 %frombool, %frombool
call void @use.1(i1 %frombool)
ret i32 undef
}
define internal i1 @test2_g(%t1* %h, i32 %i) {
; CHECK-LABEL: define {{[^@]+}}@test2_g
; CHECK-SAME: (%t1* [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LAND_RHS:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: [[CALL:%.*]] = call i32 (...) @test2_j()
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp ne i32 [[CALL]], 0
; CHECK-NEXT: br label [[LAND_END:%.*]]
; CHECK: land.end:
; CHECK-NEXT: ret i1 undef
;
entry:
%tobool = icmp ne i32 %i, 0
br i1 %tobool, label %land.rhs, label %land.end
land.rhs: ; preds = %entry
%call = call i32 (...) @test2_j()
%tobool1 = icmp ne i32 %call, 0
br label %land.end
land.end: ; preds = %land.rhs, %entry
%0 = phi i1 [ false, %entry ], [ %tobool1, %land.rhs ]
ret i1 false
}
declare i32 @test2_j(...)
; Same as test_2*, but with a PHI node depending on a tracked call result.
define i32 @test3_m(i32 %h) #0 {
; CHECK-LABEL: define {{[^@]+}}@test3_m
; CHECK-SAME: (i32 [[H:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CONV:%.*]] = trunc i32 [[H]] to i8
; CHECK-NEXT: [[CALL:%.*]] = call i32 @test3_k(i8 [[CONV]], i32 0)
; CHECK-NEXT: [[CONV1:%.*]] = sext i32 [[H]] to i64
; CHECK-NEXT: [[TMP0:%.*]] = inttoptr i64 [[CONV1]] to %t1*
; CHECK-NEXT: [[CALL2:%.*]] = call i1 @test3_g(%t1* [[TMP0]], i32 1)
; CHECK-NEXT: ret i32 undef
;
entry:
%conv = trunc i32 %h to i8
%call = call i32 @test3_k(i8 %conv, i32 0)
%conv1 = sext i32 %h to i64
%0 = inttoptr i64 %conv1 to %t1*
%call2 = call i1 @test3_g(%t1* %0, i32 1)
ret i32 undef
; uselistorder directives
uselistorder i32 %h, { 1, 0 }
}
define internal i32 @test3_k(i8 %h, i32 %i) {
; CHECK-LABEL: define {{[^@]+}}@test3_k
; CHECK-SAME: (i8 [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @e, align 4
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TMP0]] to i64
; CHECK-NEXT: [[TMP1:%.*]] = inttoptr i64 [[CONV]] to %t1*
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[CALL:%.*]] = call i1 @test3_g(%t1* [[TMP1]], i32 0)
; CHECK-NEXT: call void @use.1(i1 false)
; CHECK-NEXT: br label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 undef
;
entry:
%0 = load i32, i32* @e, align 4
%conv = sext i32 %0 to i64
%1 = inttoptr i64 %conv to %t1*
br label %loop
loop:
%phi = phi i1 [ undef, %entry], [ %call, %loop ]
%call = call i1 @test3_g(%t1* %1, i32 %i)
%frombool = icmp slt i1 %call, 1
%add = add i1 %frombool, %frombool
call void @use.1(i1 %frombool)
br i1 %call, label %loop, label %exit
exit:
ret i32 undef
}
define internal i1 @test3_g(%t1* %h, i32 %i) {
; CHECK-LABEL: define {{[^@]+}}@test3_g
; CHECK-SAME: (%t1* [[H:%.*]], i32 [[I:%.*]])
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[I]], 0
; CHECK-NEXT: br i1 [[TOBOOL]], label [[LAND_RHS:%.*]], label [[LAND_END:%.*]]
; CHECK: land.rhs:
; CHECK-NEXT: [[CALL:%.*]] = call i32 (...) @test3_j()
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp ne i32 [[CALL]], 0
; CHECK-NEXT: br label [[LAND_END]]
; CHECK: land.end:
; CHECK-NEXT: [[TMP0:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[TOBOOL1]], [[LAND_RHS]] ]
; CHECK-NEXT: ret i1 undef
;
entry:
%tobool = icmp ne i32 %i, 0
br i1 %tobool, label %land.rhs, label %land.end
land.rhs: ; preds = %entry
%call = call i32 (...) @test3_j()
%tobool1 = icmp ne i32 %call, 0
br label %land.end
land.end: ; preds = %land.rhs, %entry
%0 = phi i1 [ false, %entry ], [ %tobool1, %land.rhs ]
ret i1 false
}
declare i32 @test3_j(...)
; TODO: We can eliminate the bitcast, if we resolve the unknown argument of
; @test4_b first.
declare void @use.16(i16*)
declare void @use.8(i8*)
define void @test4_a() {
; CHECK-LABEL: define {{[^@]+}}@test4_a()
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = call i8* @test4_c(i8* null)
; CHECK-NEXT: call void @test4_b(i8* null)
; CHECK-NEXT: ret void
;
bb:
%tmp = call i8* @test4_c(i8* null)
call void @test4_b(i8* %tmp)
ret void
}
define internal void @test4_b(i8* %arg) {
; CHECK-LABEL: define {{[^@]+}}@test4_b
; CHECK-SAME: (i8* [[ARG:%.*]])
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = bitcast i8* null to i16*
; CHECK-NEXT: [[SEL:%.*]] = select i1 false, i8* null, i8* null
; CHECK-NEXT: call void @use.16(i16* [[TMP]])
; CHECK-NEXT: call void @use.8(i8* [[SEL]])
; CHECK-NEXT: ret void
;
bb:
%tmp = bitcast i8* %arg to i16*
%sel = select i1 false, i8* %arg, i8* %arg
call void @use.16(i16* %tmp)
call void @use.8(i8* %sel)
ret void
}
define internal i8* @test4_c(i8* %arg) {
; CHECK-LABEL: define {{[^@]+}}@test4_c
; CHECK-SAME: (i8* [[ARG:%.*]])
; CHECK-NEXT: bb1:
; CHECK-NEXT: [[TMP:%.*]] = and i1 undef, undef
; CHECK-NEXT: br i1 [[TMP]], label [[BB3:%.*]], label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: ret i8* undef
;
bb1: ; preds = %bb
%tmp = and i1 undef, undef
br i1 %tmp, label %bb3, label %bb2
bb2: ; preds = %bb1
unreachable
bb3: ; preds = %bb1
ret i8* null
}
; TODO: Same as test4, but with a select instead of a bitcast.
define void @test5_a() {
; CHECK-LABEL: define {{[^@]+}}@test5_a()
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = call i8* @test5_c(i8* null)
; CHECK-NEXT: call void @test5_b(i8* null)
; CHECK-NEXT: ret void
;
bb:
%tmp = call i8* @test5_c(i8* null)
call void @test5_b(i8* %tmp)
ret void
}
define internal void @test5_b(i8* %arg) {
; CHECK-LABEL: define {{[^@]+}}@test5_b
; CHECK-SAME: (i8* [[ARG:%.*]])
; CHECK-NEXT: bb:
; CHECK-NEXT: [[SEL:%.*]] = select i1 false, i8* null, i8* null
; CHECK-NEXT: call void @use.8(i8* [[SEL]])
; CHECK-NEXT: ret void
;
bb:
%sel = select i1 false, i8* %arg, i8* %arg
call void @use.8(i8* %sel)
ret void
}
define internal i8* @test5_c(i8* %arg) {
; CHECK-LABEL: define {{[^@]+}}@test5_c
; CHECK-SAME: (i8* [[ARG:%.*]])
; CHECK-NEXT: bb1:
; CHECK-NEXT: [[TMP:%.*]] = and i1 undef, undef
; CHECK-NEXT: br i1 [[TMP]], label [[BB3:%.*]], label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: ret i8* undef
;
bb1: ; preds = %bb
%tmp = and i1 undef, undef
br i1 %tmp, label %bb3, label %bb2
bb2: ; preds = %bb1
unreachable
bb3: ; preds = %bb1
ret i8* null
}
@contextsize = external dso_local local_unnamed_addr global i32, align 4
@pcount = internal local_unnamed_addr global i32 0, align 4
@maxposslen = external dso_local local_unnamed_addr global i32, align 4
define void @test3() {
; CHECK-LABEL: define {{[^@]+}}@test3()
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[IF_END16:%.*]]
; CHECK: if.end16:
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @contextsize, align 4
; CHECK-NEXT: [[SUB18:%.*]] = sub i32 undef, [[TMP0]]
; CHECK-NEXT: [[SUB19:%.*]] = sub i32 [[SUB18]], undef
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* @maxposslen, align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP1]], 8
; CHECK-NEXT: [[DIV:%.*]] = sdiv i32 undef, [[ADD]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* @pcount, align 4
; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[DIV]], [[SUB19]]
; CHECK-NEXT: [[CMP20:%.*]] = icmp sgt i32 [[TMP2]], [[MUL]]
; CHECK-NEXT: br i1 [[CMP20]], label [[IF_THEN22:%.*]], label [[IF_END24:%.*]]
; CHECK: if.then22:
; CHECK-NEXT: store i32 [[MUL]], i32* @pcount, align 4
; CHECK-NEXT: ret void
; CHECK: if.end24:
; CHECK-NEXT: [[CMP25474:%.*]] = icmp sgt i32 [[TMP2]], 0
; CHECK-NEXT: br i1 [[CMP25474]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: ret void
; CHECK: for.end:
; CHECK-NEXT: ret void
;
entry:
br label %if.end16
if.end16: ; preds = %entry
%0 = load i32, i32* @contextsize, align 4
%sub18 = sub i32 undef, %0
%sub19 = sub i32 %sub18, undef
%1 = load i32, i32* @maxposslen, align 4
%add = add nsw i32 %1, 8
%div = sdiv i32 undef, %add
%2 = load i32, i32* @pcount, align 4
%mul = mul nsw i32 %div, %sub19
%cmp20 = icmp sgt i32 %2, %mul
br i1 %cmp20, label %if.then22, label %if.end24
if.then22: ; preds = %if.end16
store i32 %mul, i32* @pcount, align 4
ret void
if.end24: ; preds = %if.end16
%cmp25474 = icmp sgt i32 %2, 0
br i1 %cmp25474, label %for.body, label %for.end
for.body: ; preds = %if.end24
%3 = trunc i64 0 to i32
%div30 = sdiv i32 %3, %sub19
ret void
for.end: ; preds = %if.end24
ret void
}