forked from OSchip/llvm-project
111 lines
4.4 KiB
LLVM
111 lines
4.4 KiB
LLVM
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
||
|
|
|
||
|
|
declare void @llvm.experimental.guard(i1, ...)
|
||
|
|
|
||
|
|
define void @test_guard_adjacent_same_cond(i1 %A) {
|
||
|
|
; CHECK-LABEL: @test_guard_adjacent_same_cond(
|
||
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %A) [ "deopt"() ]
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @test_guard_adjacent_diff_cond(i1 %A, i1 %B, i1 %C) {
|
||
|
|
; CHECK-LABEL: @test_guard_adjacent_diff_cond(
|
||
|
|
; CHECK-NEXT: %1 = and i1 %A, %B
|
||
|
|
; CHECK-NEXT: %2 = and i1 %1, %C
|
||
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %2, i32 123) [ "deopt"() ]
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %C, i32 789 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; This version tests for the common form where the conditions are
|
||
|
|
; between the guards
|
||
|
|
define void @test_guard_adjacent_diff_cond2(i32 %V1, i32 %V2) {
|
||
|
|
; CHECK-LABEL: @test_guard_adjacent_diff_cond2(
|
||
|
|
; CHECK-NEXT: %1 = and i32 %V1, %V2
|
||
|
|
; CHECK-NEXT: %2 = icmp slt i32 %1, 0
|
||
|
|
; CHECK-NEXT: %and = and i32 %V1, 255
|
||
|
|
; CHECK-NEXT: %C = icmp ult i32 %and, 129
|
||
|
|
; CHECK-NEXT: %3 = and i1 %2, %C
|
||
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %3, i32 123) [ "deopt"() ]
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
%A = icmp slt i32 %V1, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
%B = icmp slt i32 %V2, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
%and = and i32 %V1, 255
|
||
|
|
%C = icmp sle i32 %and, 128
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %C, i32 789 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Might not be legal to hoist the load above the first guard since the
|
||
|
|
; guard might control dereferenceability
|
||
|
|
define void @negative_load(i32 %V1, i32* %P) {
|
||
|
|
; CHECK-LABEL: @negative_load
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
%A = icmp slt i32 %V1, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
%V2 = load i32, i32* %P
|
||
|
|
%B = icmp slt i32 %V2, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @deref_load(i32 %V1, i32* dereferenceable(4) %P) {
|
||
|
|
; CHECK-LABEL: @deref_load
|
||
|
|
; CHECK-NEXT: %V2 = load i32, i32* %P, align 4
|
||
|
|
; CHECK-NEXT: %1 = and i32 %V2, %V1
|
||
|
|
; CHECK-NEXT: %2 = icmp slt i32 %1, 0
|
||
|
|
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 %2, i32 123) [ "deopt"() ]
|
||
|
|
%A = icmp slt i32 %V1, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
%V2 = load i32, i32* %P
|
||
|
|
%B = icmp slt i32 %V2, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; The divide might fault above the guard
|
||
|
|
define void @negative_div(i32 %V1, i32 %D) {
|
||
|
|
; CHECK-LABEL: @negative_div
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
%A = icmp slt i32 %V1, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
%V2 = udiv i32 %V1, %D
|
||
|
|
%B = icmp slt i32 %V2, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; Highlight the limit of the window in a case which would otherwise be mergable
|
||
|
|
define void @negative_window(i32 %V1, i32 %a, i32 %b, i32 %c, i32 %d) {
|
||
|
|
; CHECK-LABEL: @negative_window
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
; CHECK: @llvm.experimental.guard
|
||
|
|
%A = icmp slt i32 %V1, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %A, i32 123 )[ "deopt"() ]
|
||
|
|
%V2 = add i32 %a, %b
|
||
|
|
%V3 = add i32 %V2, %c
|
||
|
|
%V4 = add i32 %V3, %d
|
||
|
|
%B = icmp slt i32 %V4, 0
|
||
|
|
call void(i1, ...) @llvm.experimental.guard( i1 %B, i32 456 )[ "deopt"() ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|