maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[NFC][InstCombine] Revisit one-use tests in shift-amount-reassociation-in-bittest.ll 

llvm-svn: 364433
This commit is contained in:
Roman Lebedev 2019-06-26 14:42:39 +00:00
parent 6b687bf681
commit 3f3eacfec1
1 changed files with 114 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

128
llvm/test/Transforms/InstCombine/shift-amount-reassociation-in-bittest.ll
View File

@ -260,6 +260,38 @@ declare void @use32(i32)
define i1 @t16_const_oneuse0(i32 %x, i32 %y) {
; CHECK-LABEL: @t16_const_oneuse0(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, 1
call void @use32(i32 %t0)
%t1 = shl i32 %y, 1
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t17_const_oneuse1(i32 %x, i32 %y) {
; CHECK-LABEL: @t17_const_oneuse1(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T1]])
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, 1
%t1 = shl i32 %y, 1
call void @use32(i32 %t1)
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t18_const_oneuse2(i32 %x, i32 %y) {
; CHECK-LABEL: @t18_const_oneuse2(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: call void @use32(i32 [[T2]])
@ -273,8 +305,26 @@ define i1 @t16_const_oneuse0(i32 %x, i32 %y) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t17_const_oneuse1(i32 %x, i32 %y) {
; CHECK-LABEL: @t17_const_oneuse1(
define i1 @t19_const_oneuse3(i32 %x, i32 %y) {
; CHECK-LABEL: @t19_const_oneuse3(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T1]])
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, 1
call void @use32(i32 %t0)
%t1 = shl i32 %y, 1
call void @use32(i32 %t1)
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t20_const_oneuse4(i32 %x, i32 %y) {
; CHECK-LABEL: @t20_const_oneuse4(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
@ -291,8 +341,8 @@ define i1 @t17_const_oneuse1(i32 %x, i32 %y) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t18_const_oneuse2(i32 %x, i32 %y) {
; CHECK-LABEL: @t18_const_oneuse2(
define i1 @t21_const_oneuse5(i32 %x, i32 %y) {
; CHECK-LABEL: @t21_const_oneuse5(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T1]])
@ -309,8 +359,8 @@ define i1 @t18_const_oneuse2(i32 %x, i32 %y) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t19_const_oneuse2(i32 %x, i32 %y) {
; CHECK-LABEL: @t19_const_oneuse2(
define i1 @t22_const_oneuse6(i32 %x, i32 %y) {
; CHECK-LABEL: @t22_const_oneuse6(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], 1
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], 1
@ -330,8 +380,40 @@ define i1 @t19_const_oneuse2(i32 %x, i32 %y) {
ret i1 %t3
}
define i1 @t17_variable_oneuse0(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t17_variable_oneuse0(
define i1 @t23_var_oneuse0(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t23_var_oneuse0(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, %shamt0
call void @use32(i32 %t0)
%t1 = shl i32 %y, %shamt1
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t24_var_oneuse1(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t24_var_oneuse1(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T1]])
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, %shamt0
%t1 = shl i32 %y, %shamt1
call void @use32(i32 %t1)
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t25_var_oneuse2(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t25_var_oneuse2(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
@ -346,8 +428,26 @@ define i1 @t17_variable_oneuse0(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t18_variable_oneuse1(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t18_variable_oneuse1(
define i1 @t26_var_oneuse3(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t26_var_oneuse3(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T1]])
; CHECK-NEXT: [[T2:%.*]] = and i32 [[T1]], [[T0]]
; CHECK-NEXT: [[T3:%.*]] = icmp ne i32 [[T2]], 0
; CHECK-NEXT: ret i1 [[T3]]
;
%t0 = lshr i32 %x, %shamt0
call void @use32(i32 %t0)
%t1 = shl i32 %y, %shamt1
call void @use32(i32 %t1)
%t2 = and i32 %t1, %t0
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t27_var_oneuse4(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t27_var_oneuse4(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
@ -364,8 +464,8 @@ define i1 @t18_variable_oneuse1(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t19_variable_oneuse2(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t19_variable_oneuse2(
define i1 @t28_var_oneuse5(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t28_var_oneuse5(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T1]])
@ -382,8 +482,8 @@ define i1 @t19_variable_oneuse2(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
%t3 = icmp ne i32 %t2, 0
ret i1 %t3
}
define i1 @t20_variable_oneuse2(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t20_variable_oneuse2(
define i1 @t29_var_oneuse6(i32 %x, i32 %y, i32 %shamt0, i32 %shamt1) {
; CHECK-LABEL: @t29_var_oneuse6(
; CHECK-NEXT: [[T0:%.*]] = lshr i32 [[X:%.*]], [[SHAMT0:%.*]]
; CHECK-NEXT: call void @use32(i32 [[T0]])
; CHECK-NEXT: [[T1:%.*]] = shl i32 [[Y:%.*]], [[SHAMT1:%.*]]