[SDAG] Revert r296476 (and r296486, r296668, r296690).
This patch causes compile times for some patterns to explode. I have
a (large, unreduced) test case that slows down by more than 20x and
several test cases slow down by 2x. I'm sending some of the test cases
directly to Nirav and following up with more details in the review log,
but this should unblock anyone else hitting this.
llvm-svn: 296862
diff --git a/llvm/test/CodeGen/Mips/load-store-left-right.ll b/llvm/test/CodeGen/Mips/load-store-left-right.ll
index 6def55c..3bd924a 100644
--- a/llvm/test/CodeGen/Mips/load-store-left-right.ll
+++ b/llvm/test/CodeGen/Mips/load-store-left-right.ll
@@ -250,18 +250,12 @@
; MIPS64-EB: ld $[[PTR:[0-9]+]], %got_disp(struct_s0)(
; MIPS64R6: ld $[[PTR:[0-9]+]], %got_disp(struct_s0)(
-; MIPS32-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS32-DAG: sb $[[R1]], 2($[[PTR]])
-; MIPS32-DAG: lbu $[[R2:[0-9]+]], 1($[[PTR]])
-; MIPS32-DAG: sb $[[R2]], 3($[[PTR]])
-
-; MIPS32R6: lhu $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS32R6: sh $[[R1]], 2($[[PTR]])
-
-; MIPS64-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64-DAG: sb $[[R1]], 2($[[PTR]])
-; MIPS64-DAG: lbu $[[R2:[0-9]+]], 1($[[PTR]])
-; MIPS64-DAG: sb $[[R2]], 3($[[PTR]])
+; FIXME: We should be able to do better than this on MIPS32r6/MIPS64r6 since
+; we have unaligned halfword load/store available
+; ALL-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
+; ALL-DAG: sb $[[R1]], 2($[[PTR]])
+; ALL-DAG: lbu $[[R1:[0-9]+]], 1($[[PTR]])
+; ALL-DAG: sb $[[R1]], 3($[[PTR]])
%0 = load %struct.S0, %struct.S0* getelementptr inbounds (%struct.S0, %struct.S0* @struct_s0, i32 0), align 1
store %struct.S0 %0, %struct.S0* getelementptr inbounds (%struct.S0, %struct.S0* @struct_s0, i32 1), align 1
@@ -274,54 +268,37 @@
; MIPS32-EL: lw $[[PTR:[0-9]+]], %got(struct_s1)(
; MIPS32-EB: lw $[[PTR:[0-9]+]], %got(struct_s1)(
-; MIPS32-EL-DAG: lwl $[[R1:[0-9]+]], 3($[[PTR]])
-; MIPS32-EL-DAG: lwr $[[R1]], 0($[[PTR]])
-; MIPS32-EL-DAG: swl $[[R1]], 7($[[PTR]])
-; MIPS32-EL-DAG: swr $[[R1]], 4($[[PTR]])
-; MIPS32-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS32-EB-DAG: lwr $[[R1]], 3($[[PTR]])
-; MIPS32-EB-DAG: swl $[[R1]], 4($[[PTR]])
-; MIPS32-EB-DAG: swr $[[R1]], 7($[[PTR]])
-
-; MIPS32-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: sb $[[R1]], 4($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 1($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: sb $[[R1]], 5($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 2($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: sb $[[R1]], 6($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 3($[[PTR]])
-; MIPS32-NOLEFTRIGHT-DAG: sb $[[R1]], 7($[[PTR]])
+; MIPS32-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS32-DAG: sb $[[R1]], 4($[[PTR]])
+; MIPS32-DAG: lbu $[[R1:[0-9]+]], 1($[[PTR]])
+; MIPS32-DAG: sb $[[R1]], 5($[[PTR]])
+; MIPS32-DAG: lbu $[[R1:[0-9]+]], 2($[[PTR]])
+; MIPS32-DAG: sb $[[R1]], 6($[[PTR]])
+; MIPS32-DAG: lbu $[[R1:[0-9]+]], 3($[[PTR]])
+; MIPS32-DAG: sb $[[R1]], 7($[[PTR]])
; MIPS32R6: lw $[[PTR:[0-9]+]], %got(struct_s1)(
-; MIPS32R6-DAG: lw $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS32R6-DAG: sw $[[R1]], 4($[[PTR]])
+; MIPS32R6-DAG: lhu $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS32R6-DAG: sh $[[R1]], 4($[[PTR]])
+; MIPS32R6-DAG: lhu $[[R1:[0-9]+]], 2($[[PTR]])
+; MIPS32R6-DAG: sh $[[R1]], 6($[[PTR]])
; MIPS64-EL: ld $[[PTR:[0-9]+]], %got_disp(struct_s1)(
; MIPS64-EB: ld $[[PTR:[0-9]+]], %got_disp(struct_s1)(
-
-; MIPS64-EL-DAG: lwl $[[R1:[0-9]+]], 3($[[PTR]])
-; MIPS64-EL-DAG: lwr $[[R1]], 0($[[PTR]])
-; MIPS64-EL-DAG: swl $[[R1]], 7($[[PTR]])
-; MIPS64-EL-DAG: swr $[[R1]], 4($[[PTR]])
-
-; MIPS64-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64-EB-DAG: lwr $[[R1]], 3($[[PTR]])
-; MIPS64-EB-DAG: swl $[[R1]], 4($[[PTR]])
-; MIPS64-EB-DAG: swr $[[R1]], 7($[[PTR]])
-
-
-; MIPS64-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: sb $[[R1]], 4($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 1($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: sb $[[R1]], 5($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 2($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: sb $[[R1]], 6($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: lbu $[[R1:[0-9]+]], 3($[[PTR]])
-; MIPS64-NOLEFTRIGHT-DAG: sb $[[R1]], 7($[[PTR]])
+; MIPS64-DAG: lbu $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS64-DAG: sb $[[R1]], 4($[[PTR]])
+; MIPS64-DAG: lbu $[[R1:[0-9]+]], 1($[[PTR]])
+; MIPS64-DAG: sb $[[R1]], 5($[[PTR]])
+; MIPS64-DAG: lbu $[[R1:[0-9]+]], 2($[[PTR]])
+; MIPS64-DAG: sb $[[R1]], 6($[[PTR]])
+; MIPS64-DAG: lbu $[[R1:[0-9]+]], 3($[[PTR]])
+; MIPS64-DAG: sb $[[R1]], 7($[[PTR]])
; MIPS64R6: ld $[[PTR:[0-9]+]], %got_disp(struct_s1)(
-; MIPS64R6-DAG: lw $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64R6-DAG: sw $[[R1]], 4($[[PTR]])
+; MIPS64R6-DAG: lhu $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS64R6-DAG: sh $[[R1]], 4($[[PTR]])
+; MIPS64R6-DAG: lhu $[[R1:[0-9]+]], 2($[[PTR]])
+; MIPS64R6-DAG: sh $[[R1]], 6($[[PTR]])
%0 = load %struct.S1, %struct.S1* getelementptr inbounds (%struct.S1, %struct.S1* @struct_s1, i32 0), align 1
store %struct.S1 %0, %struct.S1* getelementptr inbounds (%struct.S1, %struct.S1* @struct_s1, i32 1), align 1
@@ -359,21 +336,30 @@
; MIPS32R6-DAG: sw $[[R1]], 12($[[PTR]])
; MIPS64-EL: ld $[[PTR:[0-9]+]], %got_disp(struct_s2)(
-
-; MIPS64-EL-DAG: ldl $[[R1:[0-9]+]], 7($[[PTR]])
-; MIPS64-EL-DAG: ldr $[[R1]], 0($[[PTR]])
-; MIPS64-EL-DAG: sdl $[[R1]], 15($[[PTR]])
-; MIPS64-EL-DAG: sdr $[[R1]], 8($[[PTR]])
+; MIPS64-EL-DAG: lwl $[[R1:[0-9]+]], 3($[[PTR]])
+; MIPS64-EL-DAG: lwr $[[R1]], 0($[[PTR]])
+; MIPS64-EL-DAG: swl $[[R1]], 11($[[PTR]])
+; MIPS64-EL-DAG: swr $[[R1]], 8($[[PTR]])
+; MIPS64-EL-DAG: lwl $[[R1:[0-9]+]], 7($[[PTR]])
+; MIPS64-EL-DAG: lwr $[[R1]], 4($[[PTR]])
+; MIPS64-EL-DAG: swl $[[R1]], 15($[[PTR]])
+; MIPS64-EL-DAG: swr $[[R1]], 12($[[PTR]])
; MIPS64-EB: ld $[[PTR:[0-9]+]], %got_disp(struct_s2)(
-; MIPS64-EB-DAG: ldl $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64-EB-DAG: ldr $[[R1]], 7($[[PTR]])
-; MIPS64-EB-DAG: sdl $[[R1]], 8($[[PTR]])
-; MIPS64-EB-DAG: sdr $[[R1]], 15($[[PTR]])
+; MIPS64-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS64-EB-DAG: lwr $[[R1]], 3($[[PTR]])
+; MIPS64-EB-DAG: swl $[[R1]], 8($[[PTR]])
+; MIPS64-EB-DAG: swr $[[R1]], 11($[[PTR]])
+; MIPS64-EB-DAG: lwl $[[R1:[0-9]+]], 4($[[PTR]])
+; MIPS64-EB-DAG: lwr $[[R1]], 7($[[PTR]])
+; MIPS64-EB-DAG: swl $[[R1]], 12($[[PTR]])
+; MIPS64-EB-DAG: swr $[[R1]], 15($[[PTR]])
; MIPS64R6: ld $[[PTR:[0-9]+]], %got_disp(struct_s2)(
-; MIPS64R6-DAG: ld $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64R6-DAG: sd $[[R1]], 8($[[PTR]])
+; MIPS64R6-DAG: lw $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS64R6-DAG: sw $[[R1]], 8($[[PTR]])
+; MIPS64R6-DAG: lw $[[R1:[0-9]+]], 4($[[PTR]])
+; MIPS64R6-DAG: sw $[[R1]], 12($[[PTR]])
%0 = load %struct.S2, %struct.S2* getelementptr inbounds (%struct.S2, %struct.S2* @struct_s2, i32 0), align 1
store %struct.S2 %0, %struct.S2* getelementptr inbounds (%struct.S2, %struct.S2* @struct_s2, i32 1), align 1
@@ -430,17 +416,17 @@
; MIPS64-EL-DAG: lwl $[[R1:[0-9]+]], 3($[[PTR]])
; MIPS64-EL-DAG: lwr $[[R1]], 0($[[PTR]])
-; MIPS64-EB: ld $[[SPTR:[0-9]+]], %got_disp(arr)(
+; MIPS64-EB: ld $[[SPTR:[0-9]+]], %got_disp(arr)(
+; MIPS64-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[PTR]])
+; MIPS64-EB-DAG: lwr $[[R1]], 3($[[PTR]])
+; MIPS64-EB-DAG: dsll $[[R1]], $[[R1]], 32
; MIPS64-EB-DAG: lbu $[[R2:[0-9]+]], 5($[[PTR]])
; MIPS64-EB-DAG: lbu $[[R3:[0-9]+]], 4($[[PTR]])
; MIPS64-EB-DAG: dsll $[[T0:[0-9]+]], $[[R3]], 8
; MIPS64-EB-DAG: or $[[T1:[0-9]+]], $[[T0]], $[[R2]]
-; MIPS64-EB-DAG: lbu $[[R4:[0-9]+]], 6($[[PTR]])
; MIPS64-EB-DAG: dsll $[[T1]], $[[T1]], 16
-; MIPS64-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[PTR]])
-; MIPS64-EB-DAG: lwr $[[R1]], 3($[[PTR]])
-; MIPS64-EB-DAG: dsll $[[R5:[0-9]+]], $[[R1]], 32
-; MIPS64-EB-DAG: or $[[T3:[0-9]+]], $[[R5]], $[[T1]]
+; MIPS64-EB-DAG: or $[[T3:[0-9]+]], $[[R1]], $[[T1]]
+; MIPS64-EB-DAG: lbu $[[R4:[0-9]+]], 6($[[PTR]])
; MIPS64-EB-DAG: dsll $[[T4:[0-9]+]], $[[R4]], 8
; MIPS64-EB-DAG: or $4, $[[T3]], $[[T4]]